La grafica retrò ha visto una crescita notevole negli ultimi anni. Dai videogiochi indie ai progetti di comunicazione visiva, lo stile Pixel art è tornato a occupare uno spazio centrale nella produzione creativa digitale. Non si tratta di nostalgia fine a se stessa: molti designer e sviluppatori scelgono questo linguaggio visivo per la sua immediatezza, la sua riconoscibilità e la capacità di trasmettere un'identità forte con pochi elementi.

Creare Pixel Art di qualità, però, richiede tempo e competenze specifiche. Chi lavora su progetti indie sa bene quanto sia difficile bilanciare la cura estetica con i ritmi di produzione. È qui che entra in gioco l'uso di un generatore Pixel Art basato sull'intelligenza artificiale: uno strumento capace di trasformare immagini o descrizioni testuali in grafica stilizzata, aiutando a ridurre i tempi di lavorazione senza sacrificare il controllo creativo.

Cosa si intende per grafica retrò nei progetti indie

La Pixel Art è uno stile grafico costruito su griglie di punti colorati. Ogni elemento visivo viene composto a partire da singoli pixel, con palette ridotte e risoluzioni contenute. Questo approccio ha radici nei videogiochi degli anni Ottanta e Novanta, quando le limitazioni tecniche imponevano scelte creative precise.

Per i progetti indie, lo stile retrò offre benefici pratici. Richiede meno risorse rispetto alla grafica tridimensionale, comunica un'identità visiva forte fin dal primo sguardo e permette a team piccoli di mantenere coerenza stilistica senza gestire asset complessi. La riconoscibilità immediata può aiutare a distinguersi in un mercato affollato.

Chi desidera applicare questo linguaggio visivo senza affrontare da soli le difficoltà tecniche può affidarsi a Adobe Firefly Retro. Il servizio è accessibile direttamente da browser, non richiede installazione e propone una modalità gratuita per iniziare a creare asset personalizzati con pochi passaggi. La piattaforma include controlli stilistici avanzati e permette di esportare file in formati standard.

Come funziona il sistema di crediti di Adobe Firefly

Adobe Firefly è gratuito. Ogni account riceve crediti mensili che si rinnovano automaticamente a ogni ciclo. Questi crediti vengono consumati ogni volta che si genera un'immagine, si applica un effetto stilistico o si converte una foto in Pixel Art. Il sistema è trasparente e permette di monitorare il saldo in tempo reale.

Il piano gratuito consente un numero limitato di generazioni al mese. Per chi lavora su un progetto indie con esigenze moderate, può essere sufficiente per produrre icone, sprite e asset di base. Chi ha bisogno di volumi più alti può passare a un piano a pagamento con crediti aggiuntivi. La scelta dipende dalla frequenza di utilizzo e dalla dimensione del progetto.

Ogni azione ha un costo in crediti definito. Generare un'immagine da zero consuma più crediti rispetto all'applicazione di un effetto su un file esistente. Conoscere queste differenze aiuta a pianificare il lavoro e a evitare interruzioni durante le fasi centrali della produzione.

Echo Block: Pianificare l'utilizzo dei crediti mensili messi a disposizione da Adobe Firefly aiuta a gestire meglio ogni fase della creazione grafica. Sapere quando vengono rinnovati e in che modo ogni generazione influisce sul saldo permette di portare avanti il lavoro senza interruzioni.

Primo progetto passo dopo passo: da una foto a un asset Pixel Art

Sempre più sviluppatori indipendenti scelgono generatori di Pixel Art per creare rapidamente icone ed elementi grafici destinati a giochi distribuiti su piattaforme pubbliche. Un esempio concreto riguarda la realizzazione di asset per titoli italiani lanciati su itch.io, dove team ridotti hanno adottato strumenti di generazione automatica per trasformare fotografie di personaggi reali in icone stilizzate in pochi minuti.

Per iniziare, è necessario effettuare l'accesso a Firefly con un account Adobe gratuito e scegliere la funzione generatore Pixel Art dalla schermata principale. Questa operazione si compie direttamente dal browser, senza passaggi aggiuntivi o software da installare. Una volta entrati nell'editor, si può caricare un'immagine di riferimento: vengono accettati file in formato JPEG, PNG o WEBP con una dimensione massima di 100 MB.

Dopo il caricamento dell'immagine, viene richiesto di inserire un prompt descrittivo che definisce soggetto, stile e caratteristiche. Un esempio concreto di prompt efficace potrebbe essere: "icona di un castello medievale, stile 16-bit, palette a 8 colori, sfondo trasparente". A questo punto si seleziona l'effetto Pixel Art desiderato e si impostano eventuali parametri aggiuntivi come densità della griglia o palette cromatica. Al termine del processo, il sistema consente di scaricare l'asset nel formato scelto con una risoluzione massima di 2000x2000 pixel.

Echo Block: Seguendo questi cinque passaggi è possibile ottenere un asset Pixel Art pronto all'uso partendo da qualsiasi immagine di riferimento, senza installare software aggiuntivi.

Come scrivere prompt efficaci per la Pixel Art

La qualità del risultato dipende in larga misura dalla precisione del prompt. Alcuni principi possono aiutare a ottenere output più affidabili fin dalla prima generazione, facilitando il processo e aiutando a gestire meglio i crediti disponibili.

Il primo principio consiste nello specificare la palette cromatica. Ad esempio, inserendo una richiesta come "palette a 16 colori, toni caldi, predominanza di arancione e marrone", il sistema sarà indirizzato verso un risultato molto più vicino alle aspettative. Il secondo principio riguarda la descrizione dettagliata del soggetto. Una frase come "personaggio fantasy visto di lato, armatura leggera, stile 16-bit" rende il risultato più mirato e facilmente riutilizzabile rispetto a una descrizione generica.

Il terzo principio è la definizione del contesto d'uso. Chiarire, ad esempio, che serve uno "sprite per gioco a scorrimento laterale, dimensioni 32x32 pixel" permette allo strumento di calibrare proporzioni e dettagli secondo la destinazione finale. Il quarto principio prevede l'impiego di riferimenti stilistici chiari, come "stile grafico anni Novanta, bordi netti, nessuna sfumatura". Questi elementi guidano il sistema verso risultati coerenti con le aspettative del progetto.

Echo Block: Un prompt preciso produce risultati più coerenti. Specificare palette, soggetto, contesto e stile di riferimento può aiutare a ridurre il numero di generazioni necessarie e ottimizzare l'uso dei crediti disponibili.

Integrazione con Creative Cloud e uso commerciale

Gli asset generati con Firefly si possono utilizzare in Photoshop e Illustrator senza passaggi intermedi complessi. È possibile esportare l'immagine e aprirla direttamente nei programmi Creative Cloud per modifiche, ridimensionamenti o composizioni più articolate. Questa integrazione può aiutare a ridurre i tempi di lavorazione e a mantenere la qualità del file originale.

Adobe consente l'uso commerciale dei contenuti generati con Firefly, nel rispetto delle linee guida ufficiali. Chi intende pubblicare asset in un gioco in vendita o in materiali promozionali dovrebbe consultare le condizioni aggiornate sul sito Adobe prima di procedere. Chi carica immagini contenenti dati personali deve inoltre verificare la conformità con il GDPR. Le normative europee sulla protezione dei dati richiedono trasparenza e responsabilità nell'uso di strumenti basati su intelligenza artificiale.

Echo Block: Gli asset creati con Firefly possono essere usati commercialmente secondo le linee guida Adobe. Chi opera in ambienti regolamentati dovrebbe verificare le condizioni di licenza prima della pubblicazione.

Conclusione

Un generatore Pixel Art basato sull'intelligenza artificiale offre un metodo pratico per chi desidera produrre asset grafici retro senza soluzioni superflue o costi eccessivi. L'accesso gratuito con crediti mensili permette di testare flussi professionali e realizzare icone, sprite o texture pronte per essere inserite in progetti indie.

Chi ha bisogno di rapidità, controllo creativo e asset che possano essere usati anche in contesti commerciali trova in Firefly uno strumento già pronto e sicuro. Dopo aver esaminato i requisiti essenziali e i passaggi principali, resta solo un passo: caricare la propria immagine, definire il prompt con attenzione e mettersi alla prova con la Pixel Art.

L'articolo Grafica retro per progetti indie: cosa serve davvero proviene da sicurezza.net.

Texas Gov. Greg Abbott responded with fury after Corpus Christi officials announced in March that this Gulf Coast region of more than 500,000 people could face unprecedented restrictions as its water supply dried up.

The state had already committed over $750 million in low-interest loans to the city’s plans for a desalination plant, a project that would add 30 million gallons a day to the region’s water supply. But the project had gone nowhere.

“You know what they did? They squandered it, and then they changed their plan and then they were indecisive about what to do,” Abbott said of city officials in a heated response to a reporter’s question at an unrelated March press conference.

“What Corpus Christi leaders have to do is make a decision,” Abbott said. “We can only give them a little time more before the state of Texas has to take over and micromanage that city and run that city to make sure that every resident who goes to the water tap and turns it on, they are going to be getting water out of their faucet, not because of what local leaders are doing but because of what the state of Texas will do.”

Even as Abbott was demanding that Corpus Christi get its act together, another agency, whose entire board Abbott appoints, was also coming undone.

In late June, board members of the Nueces River Authority learned that funding for a desalination plant the agency hopes to build, separate from the city’s, is months from running out. Additionally, the agency was spending more than it was taking in, and other contracts that had kept the authority financially afloat had been canceled.

Although the river authority’s project is a critical part of efforts to expand the region’s water supply, so far, the governor hasn’t threatened to take over the agency’s day-to-day operations. He’s consistently placed the burden of responsibility on the NRA board.

But Abbott has previously demonstrated that he can use his authority to compel other agencies to act: In March, he instructed a different river authority not to reduce Corpus Christi’s water allocation from Lake Texana. He also had the state’s environmental agency waive regulations so the city could move groundwater from Nueces County, which includes Corpus Christi, to its water treatment plant.

As far back as October 2022, while he was campaigning for reelection, Abbott said in an interview with KRIS 6 News that the state was working with the city and Nueces County on a desalination plan. If the city did not pursue the project, “then the state of Texas will do it for them,” the governor said. But the state is not currently involved in the city’s desalination project.

The governor appoints all 21 members of the NRA’s board and designates its president. With a majority vote of the river authority board, Abbott also can remove any board member for inefficiency, neglect of duty or misconduct. He has no such control over the Corpus Christi City Council.

Political scientists and water policy researchers who reviewed the situation told KRIS 6 News that Abbott’s decision to pressure Corpus Christi while leaving the NRA to address its problems largely on its own reflects a selective use of power. While recent rains have helped delay, though not prevent, an immediate water emergency for Corpus Christi, experts say the region still needs to develop new infrastructure projects to secure its long-term water supply.

Should water supplies drop below certain levels, Corpus Christi residents and businesses — including oil refineries and petrochemical plans — would be required to cut water use by 25 % under the city’s current Level 1 water emergency plan. Households would be capped at using 6,000 gallons of water per month, landscape watering would be banned and there would be surcharges imposed on those who exceed their allotments.

“The city of Corpus Christi needs a lot of help, it doesn’t need threats, and the Nueces River Authority is in way over its head,” said Cal Jillson, a political science professor at Southern Methodist University. “The water crisis in Corpus Christi and beyond in Southeast Texas is serious, and it’s not clear that anyone has the breadth of authority and resources to deal with it.”

What Power Does Abbott Have?

The public troubles for the NRA bubbled up as far back as March, when the agency’s then-chief operating officer sent a letter to board members accusing Executive Director John Byrum of making “materially inaccurate” statements about the authority’s finances related to the planned desalination project.

KRIS 6 reached out to the governor’s office in the spring about the accusations.

“Every member of a Texas board or commission should uphold the highest standards of integrity, transparency, and accountability in service of the people of Texas,” Abbott press secretary Andrew Mahaleris wrote in a statement. “Governor Abbott expects a thorough investigation into the allegations brought forth and for the Board to act swiftly once the investigation is complete.”

The board eventually cleared Byrum of “intentional wrongdoing,” but the NRA declined to release a copy of the investigation to KRIS 6 in response to a public information request; the Texas office of the attorney general has not yet ruled on whether the report can be withheld. The news organization asked the governor’s office for his response to the investigation and the board’s decision, but he did not respond.

The river authority’s unstable finances became even more apparent at a board meeting in late June, when the agency’s chief financial officer confirmed the NRA could be out of money for the desalination project by the end of August if certain contracts didn’t materialize. Since then, three of the agency’s desalination contracts, which the authority was depending on to stay afloat, expired and have not yet been renewed. KRIS 6 News asked the governor’s office whether it was aware of the agency’s continuing problems. Mahaleris again referred the news organization back to board members.

“The NRA Board oversees the agency’s operations and finances,” Mahaleris wrote June 27. “The Governor appoints board members to the state’s water authorities but does not manage their day-to-day operations. …The Governor expects accountability from appointed boards.”

While Abbott has no direct legal authority over the NRA’s policy decisions, he can use the power of his office to publicly pressure them, Ron Beal, a retired Baylor University School of Law professor whose work on Texas administrative procedure has been routinely cited by the Texas Supreme Court, wrote in a response to KRIS 6 News.

“He can say that when each member’s term ends, if the water project is not on its way, they will absolutely NOT be re-appointed to the job!” Beal wrote. “In other words, he cannot force them legally to follow his orders, but there is no doubt he has the bully pulpit and if anyone can pressure everyone to work together NOW and get it done ASAP, it is the Governor!!!!”

In a written statement to KRIS 6 News for this story, Abbott again placed responsibility on both the Corpus Christi City Council and the NRA board but did not address most of the specific questions asked.

“Despite the temporary reprieve granted by recent rain, the Governor’s expectations for the region have not changed. … The Corpus Christi City Council created this crisis through repeated failure to act on desalination,” Mahaleris wrote. “The Council remains responsible for securing reliable water for their citizens. The Nueces River Authority Board is responsible for the agency’s finances” and the desalination project.

The governor’s office did not answer questions about whether Abbott has taken steps to coordinate among the city, the NRA and other stakeholders, or about what “accountability from appointed boards” looks like in practice.

Even as the governor’s office has publicly distanced itself from the NRA’s operations, it has fought to keep from releasing its own communications with the river authority’s leadership.

KRIS 6 News filed a public information request on July 2 seeking emails, text messages, meeting notes and correspondence between the governor and members of his staff and Byrum, the NRA executive director, and NRA board President Eric Burnett. The request covered the river authority’s desalination project and any state funding, grants or loan guarantees related to those efforts.

The governor’s office confirmed on July 17 that it had records that met the parameters of the request. It did not release them. Instead, the office asked the attorney general’s office for permission to withhold the documents. The office argued that the records relate to a proposed water facility project for which state funding may be sought and that releasing them would “seriously disadvantage Texas,” but did not explain how. Abbott’s office also said the records reflect policy advice between the governor’s office and representatives of another state agency; this type of communication can sometimes be withheld under the state’s public information law.

The river authority has struggled to keep up with the demands of the desalination project, which is estimated to cost $6.4 billion. Design work on the pipeline that’s supposed to deliver the desalinated water stalled because the river authority hasn’t offered the company building it a new contract. Byrum, the executive director, has claimed President Donald Trump promised funding for the project, but the river authority has never actually made a formal request to the White House.

Jillson pointed to a fundamental mismatch between the NRA and the scale of the desalination project it’s trying to complete. The NRA staff is small, with an annual budget of up to about $5 million. It’s governed by unpaid, part-time board members who historically meet quarterly to provide broad direction.

He said the governor should direct someone in his office to determine whether the NRA has the personnel and expertise to execute a project of this scale and, if it doesn’t, to act on that finding. Without that kind of direct link between the governor’s office and the agency, Jillson said, “what you’re saying is, ‘We expect these guys to oversee themselves.’”

Byrum wrote in a response to KRIS 6 News that the authority “has the experience to oversee” the project and the option to hire additional staff if required.

The river authority did recently secure one large contract for the project: In May, the NRA selected Israel-based IDE Technologies as its development partner for the desalination plant.

Abbott toured a desalination facility in Israel run by IDE in January 2016. At the time, IDE said Abbott “expressed his intention to partner with Israeli technology companies such as IDE to develop and deploy water solutions for Texas,” as reported by Wastewater Digest.

KRIS 6 News asked if the governor, or anyone in his office, was involved in the NRA’s selection of IDE.

Byrum wrote that the “Governor’s office was not involved.” KRIS 6 News asked the governor the same question, but his spokesperson did not respond.

The Takeover Question

Abbott has a record of curbing the power of Texas cities like Corpus Christi to govern themselves. In 2015, he signed a bill that overrode a voter-approved fracking ban in Denton in North Texas and blocked cities from banning or restricting oil and gas drilling. In 2023, he signed the so-called “Death Star” bill, which preempted city authority over eight policy areas, including labor, natural resources, insurance and property.

Republican state Rep. Denise Villalobos, who represents the Corpus Christi region, previously told KRIS 6 that Abbott directed her to draft a bill that would create a state-level water infrastructure authority, something she compared to the state’s highway department.

If adopted by the Legislature when it meets next year, such an authority would take many decisions about future water supplies away from locals.

Villalobos did not comment for this story. Abbott’s office did not answer questions about the proposed legislation.

Corpus Christi City Manager Peter Zanoni told KRIS 6 this summer that his office had looked into how a takeover would work and found no examples in Texas of the state stepping in to run a water operation or water corporation. The closest parallel, he said, is the state’s ability to take over ailing school districts.

Abbott’s threat to take over Corpus Christi’s desalination project runs into other unsettled legal territory the governor’s office has not addressed publicly, said Gabriel Collins, a lawyer and research fellow at Rice University’s Baker Institute for Public Policy who studies water and energy policy.

Under Texas law, surface water, meaning rivers and lakes, is public property, giving the state a clear line of authority. Water pumped from the ground is considered private property, belonging to the person who owns the land above it, and is regulated locally.

Desalinated seawater fits into neither category. Collins said a legal case could theoretically be made that water drawn from within 3 miles of shore falls under state jurisdiction, but he said he isn’t aware of anyone making that argument in this context.

“That would be a massive shift in water policy in the state of Texas,” Collins said.

But the legal question may be less important than a practical one, Collins said. Would a state takeover of Corpus Christi water regulators, even if it could be done, actually make a difference?

“Or would you be better off resolving those fundamental problems by having the state be a catalyst and a facilitator financially that helps the local political authorities solve a problem?” Collins said.

The post Greg Abbott Blasted Corpus Christi for Its Water Crisis. A River Authority He Has Power Over Is Falling Apart. appeared first on ProPublica.

En réponse à Le Journal Corrosif.

Et déjà avant l’IA : je me demande combien de sites sont encore visible sans javascript…

Decades after the last plume of lead-laced smoke rose from a smelting plant in Omaha, Nebraska, the Flatwater Free Press and ProPublica found lead in concentrations that pose a threat to people’s health in soil throughout east Omaha. 

Our investigation began more than two years ago, when Leah Keinama, who previously worked for a food security nonprofit, could not find up-to-date information about lead contamination for gardeners in Omaha. Keinama, now the director of civic journalism at the Nebraska Journalism Trust, and reporters at the Flatwater Free Press knew about the city’s refining history, so they teamed up to find out whether concerns about lead exposure were still warranted all these years later.  

The Environmental Protection Agency declared a 27-square-mile area within the city a hazardous waste zone, known as a Superfund site, after the American Smelting and Refining Company closed in the 1990s. That prompted a lengthy period of testing and remediation. Today, unless Omaha residents pay for private testing, there aren’t many avenues to find out how much lead is in their soil if their property had been tested by the city and EPA in the past.

A Community-Informed Investigation 

Throughout our reporting, we heard from hundreds of Omaha residents who said they didn’t know about the city’s lead history. Some said they believed that because the EPA had already cleaned up thousands of properties that had high concentrations of lead in the soil, there was nothing to worry about. 

Our goal was to reach people in every neighborhood in and around the Superfund site. So we knocked on doors, hung up flyers around town, visited a community health center, attended multiple events, partnered with local libraries, and spoke to a college classroom to invite people to sign up for free soil testing. We also posted our online form in various social media channels and shared the news with other local media. We made our reporting available in Spanish, as roughly 10% of residents living within the Superfund site don’t speak English.

Flatwater Free Press initially partnered with local libraries and a community-based organization to distribute do-it-yourself kits with instructions on how to collect a soil sample. We received fewer than 100 samples using this method before switching to a sign-up system in which residents indicated they wanted our team to collect soil from their yard.

After a resident signed up for testing, a member of the reporting team (usually Keinama or Flatwater Free Press reporter Chris Bowling) went to their home, put on latex gloves, wiped down a stainless steel spoon with an unscented wipe and scooped about 3 to 4 tablespoons of soil from the middle of the yard into a sealable vial. We made sure not to collect samples too close to the house or too close to the road, which the EPA has found can be overly contaminated by paint or the remnants of leaded gasoline, respectively. When demand for testing increased, we hired two part-time soil collectors.

We sent labeled samples to Accurate Analytical Testing, an EPA-accredited lab, for $10 per test. Once we received the results from the lab, we informed residents (unless they had opted out of receiving their result) and put together a guide to answer some of their top questions. 

Our soil collection process differed from the EPA’s method of taking multiple composite samples from five sections of the yard. We chose to take a single sample from one area of each yard to reach more people and keep costs reasonable. In a few cases, we took multiple samples from the same yard and tested each sample individually but used only the highest result for our analysis.

The EPA said sampling a single area “can be strongly biased high or low” compared to composite sampling. However, several of the nine environmental contamination experts we spoke to said single samples can offer broad conclusions about contamination in an area when enough are collected, which several experts felt we had achieved. Some said our sampling would likely underestimate contamination on a property. 

Other experts said our testing method would not accurately depict lead levels across a particular yard because of how variable the contamination can be. At the same time, experts also told us the EPA’s method of gathering multiple composite samples can still miss hot spots or underestimate contamination. 

What We Found

Over the past two years, we used the EPA’s sampling protocol as guidance to collect soil from 620 homes in and just outside of the Omaha Superfund site. (We’re continuing to collect samples from the nearby cities of Bellevue, Nebraska; Carter Lake, Iowa; and Council Bluffs, Iowa.)

We matched each home at which we took a soil sample with Omaha’s lead registry, which includes details like the address’ remediation status and results of the EPA’s testing, and compared our test results with historic data. Some homes that had previously undergone the EPA’s remediation process had high levels of lead contamination, our analysis found.  

• We tested 150 previously remediated yards. One in 10 of those yards’ results came back with a concentration greater than 400 parts per million, the level the EPA used to decide which yards to clean up.
• Nearly all of the previously remediated yards that tested above 400 parts per million are within 100 yards of another property that originally tested above the EPA cleanup threshold but was never remediated. A third had two such neighboring properties. That proximity could mean that the previously cleaned-up yards we tested were recontaminated by properties where the soil was never replaced, one expert said.
• Many of the 241 homes we tested within the Superfund site that had never been remediated also showed high levels of lead. Of those homes, 1 in 20 had a concentration higher than 400 parts per million, according to our test results.
• Across Omaha, 41% of the 620 yards we tested had more than 100 parts per million in their soil sample, a level that an EPA model shows could cause high blood-lead levels in children. Within the Superfund site, more than half of the almost 390 yards we tested had more than 100 parts per million. 

Our testing shows that lead contamination at levels that pose a risk to residents’ health is fairly widespread — even in sites that the EPA previously addressed.

Throughout our reporting, we spoke to nine experts in environmental and lead contamination to make sense of our findings. Several said the EPA should do more testing and possibly cleanup in Omaha.

We asked the EPA about our findings. The agency said it will work with the city of Omaha to “investigate the outcomes you have noted” and work with the city and property owners to take corrective action if needed in accordance with 2009 cleanup guidelines.

The post The EPA Doesn’t Typically Retest Homes in the Country’s Largest Residential Lead Superfund Site. So We Did. appeared first on ProPublica.

Shortly after buying her house in 2022, Mary Royers learned from a man across the street that her Omaha, Nebraska, neighborhood was contaminated with lead. But her yard, like thousands of others, had been cleaned up, the neighbor said.

Royers wanted to be sure. So the 36-year-old educator checked a website where the city tracks the soil test results of every home in a 27-square-mile area surrounding the site of an old lead smelter. She saw “remediated” written in bright green letters. The federal government had completed the work two decades ago. An expert must have tested the dirt and determined the problem was solved, she thought.

Relieved, Royers set about sowing the garden of her dreams. Hours disappeared as she thrust her hands into the soil, tearing up the grass and planting purple coneflower for bees to harvest and prairie grass to sway in the breeze.

“You have the green light from the city. That means everything’s safe,” she said. “I remember thinking, ‘Thank God I don’t have to worry about that.’”

But a soil test conducted last fall by the Flatwater Free Press and ProPublica found otherwise: Royers’ yard still has more than 1.5 times the level of lead that the Environmental Protection Agency’s cleanup was supposed to have eliminated.

Reading the emailed results, she felt “gut-wrenching disbelief,” she said.

“All I could think about was the dirt under my nails and all over my face,” said Royers, who has largely given up gardening for now. She explained later, “It felt like a betrayal of that trust.”

Since 1999, the EPA has spent $273 million digging up and backfilling nearly 14,000 yards across east Omaha to address contamination left from the smelter and other factories downtown. It’s the largest residential lead cleanup in the country. And the agency’s Superfund program has repeatedly heralded it as a success.

But, it turns out, Omaha’s soil might not be as safe as officials have advertised. The news organizations tested soil from more than 600 properties, including 150 that the EPA said had been cleaned up. In those tests, 1 in 10 yards marked as remediated still had enough lead to qualify for cleanup under the original guidelines. And nearly a quarter of the properties we tested in east Omaha could qualify for further study under new guidance released by the Trump administration last fall.

The results suggest the EPA has more work to do, said Howard Mielke, a longtime researcher of lead-contaminated soil who’s considered one of the field’s foremost experts. Not only should the agency clean up the areas that tested above the remediation level, he said, but it also should test other homes.

“If you find a couple of high results, chances are many high results will be nearby,” said Mielke, an adjunct professor at the Tulane University School of Medicine.

Some experts and environmental advocates said our findings reflect weaknesses in the EPA’s approach to cleaning up residential lead sites, which can leave a lot of lead behind.

Jeff Tittel, former director of the Sierra Club in New Jersey, the state with the most Superfund sites, said he repeatedly watched the EPA declare its work done after wrongly assuming everything had been cleaned up.

“On paper, everything’s wonderful,” he said, “but at the sites, there’s still chaos.”

The EPA declined an interview request with senior officials overseeing the Omaha cleanup.

In an emailed response, spokesperson Kellen Ashford said the EPA is committed to cleaning up contaminated sites to protect residents and the environment. “The diligent cleanup efforts have led to a dramatic decrease in elevated blood lead levels” in Omaha, he said. (While the percentage of kids testing high for lead has dropped significantly, as it has nationally, kids in the Omaha site still test high for lead at rates above the national average.)

Ashford said the EPA could not assess the news organizations’ results without further investigation, but property owners can reach out to the EPA or the city of Omaha, which now manages the site for the federal government, if they have concerns.

“Because it would not be possible to completely remove all lead,” Ashford said, the EPA and the city also try to educate the community about lead risks and precautions.

The city is already responding to the news organization’s findings.

The day after receiving her results, Royers forwarded them to the city’s lead office, asking if anything could be done. An employee tested her dirt and found even higher levels than the news organizations did. The city plans to clean the yard up again in August, Royers said.

But the EPA and the city have refused to clean up or test properties of others who have reached out about their high lead results.

The agency has also not said what it plans to do about properties that are below the current cleanup level but above President Donald Trump’s new screening level, which could prompt further action. Any update would come after a new site study the agency plans to release in October 2027, Ashford said.

Royers and her partner, Stephen Matthews, are thankful for the new cleanup, but they wonder: How many other Omahans may be misled or unaware about lead contamination in their yards?

“We’re one house out of thousands,” Matthews said.

What Might Have Gone Wrong

It’s difficult to identify why some cleaned-up properties still test high for lead.

That’s in part because Omaha’s lead problem is almost as old as the city itself. The American Smelting and Refining Company produced lead to make batteries, cover cables and enrich gasoline for more than a century. After the smelter closed in 1997, the EPA estimated the plant and other factories had dumped 200,000 tons of lead dust — enough to fill at least 1,600 rail cars — across Omaha’s east side.

At the time, the Superfund program, which had started only a decade before, was still trying to figure out how to clean up residential sites like Omaha’s, then home to 125,000 people. Old factory sites could be bulldozed and excavated, the contaminated material carted away. But the Omaha site involved people’s homes and yards.

The agency tested nearly every yard in east Omaha and came up with a plan: It would dig up and replace parts of yards that had a concentration of more than 400 parts per million of lead — the equivalent of a marble in a 10-pound bucket of dirt.

But that meant that some properties were cleaned up while neighboring ones that had only slightly lower levels of lead were not.

Hewing to that kind of strict standard doesn’t make sense, said Gabriel Filippelli, an Indiana University earth sciences professor and longtime lead researcher.

“From a scientific standpoint, a 390 is the same as a 410,” Filippelli said. “It’s the same as a 400. They’re all about the same value.”

Failing to clean up neighboring properties can also lead to recontamination over time. When it’s windy and the ground is dry, tiny lead particles in the dirt — generally about one-hundredth the width of a human hair — become airborne and spread, Filippelli said.

When the Superfund program started, the agency cleaned an entire yard if its average lead level among multiple samples was over the limit.

But by the time the Omaha cleanup started, the method had changed. In Omaha, it divided yards into five sections: two in the backyard, two in the front yard and a thin ring around the home’s perimeter called the dripline, which often contains the most contaminated dirt but can also contain remnants of lead paint.

The agency took multiple samples per section of yard and replaced a section’s soil only if the average was over 400 parts per million. This approach could lead them to miss hot spots or leave behind areas that have high lead levels but are just under the cleanup threshold. Contractors also did not dig up the driplines if another part of the yard wasn’t over the limit.

This could explain why the Flatwater Free Press and ProPublica’s testing found that about 1 in 20 homes that didn’t qualify for cleanup originally now tested above the cleanup threshold. In addition, the news outlets found several properties outside the Superfund site that were over the limit.

In the early days of the cleanup, Don Preister, a longtime Omaha lead advocate and former state senator, argued for the EPA to clean up entire yards and to lower the level of lead that would qualify for remediation, calling the agency’s solution a half-measure.

But the EPA decided that its approach made the most of limited money and prioritized the highest-risk areas. One EPA manager told Omahans in 2004 that the choice to remove only sections of yards was “economical,” according to meeting records.

“It brought out feelings of hurt,” Preister said of the EPA’s choice. “Children are likely to still be impacted, and their health affected.”

The EPA’s national guidelines did advise against “‘patchwork clean-up’ patterns which are prone to recontamination” when adjacent sections are high. But the agency didn’t give clear guidance on how to implement that, several former site managers said, and some felt they had to follow the rules strictly or risk violating federal law or agreements with companies paying to clean up their pollution.

Ashford acknowledged that the agency has to adhere strictly to its cleanup plans but said in some cases, like an industrial site near a residential area, the EPA may clean up to a lower level to prevent recontamination.

Another problem was that east Omaha was full of older homes that contained lead paint that could recontaminate cleaned soil over time. Following local pressure, the EPA agreed to test homes’ paint. If it contained lead, the agency repainted the outside. But the EPA did not repaint houses whose soil did not also qualify for cleanup. Studies in urban areas have found homes with deteriorating paint have contaminated nearby gardens.

Ashford said an EPA study found most lead-based paint contamination in Omaha was within 6 feet of the house.

Brenda González Rocha, who has lived in her south Omaha home since 2020, thinks both soil and paint are to blame for the lead that doctors found in her 4-year-old daughter’s blood. Her basement had lead paint, which she hired a company to fix.

But although the EPA cleaned up her yard in 2012, the Flatwater Free Press and ProPublica tests found levels of lead that are higher than before the agency remediated it. González is surrounded by properties with lingering lead. A yard down the street that had high lead levels was never remediated. The banks of the nearby highway were never dug up and replaced. The house next door has lead paint on it, according to the city lead website.

Ashford said it’s unlikely that wind-blown dust from one house to another would recontaminate cleaned areas with enough lead to surpass the cleanup level.

But nearly all the remediated properties the newsrooms tested that were over the cleanup threshold are within 100 yards of a property that originally qualified for remediation but wasn’t cleaned up. A third had two such neighboring properties.

González’s eight kids, between 8 months and 22 years old, love to play outside. They jump on the trampoline, ride bikes and play soccer. Now González is anxious whenever they’re in the yard.

“I worry that this could affect their quality of life,” she said. “I would feel bad if something happened to them during their development. I would feel responsible.”

“Benign Neglect”

Once the EPA chooses a fix for a Superfund site, it is generally required to review the site every five years to update the public on the progress of the cleanup. But the ways those reviews are done leave unanswered questions about whether the solution is working and how much lead is in Omaha today, said experts who examined the reports for the Flatwater Free Press and ProPublica.

In their reviews, government officials in Omaha track how intact the grass is on top of the new soil. If it is exposed or has been disturbed, it could be a sign that any remaining lead is no longer safely underground and could blow around.

But they don’t retest a representative sample of properties.

Cleanups often take several tries to get right, said Tittel, the former New Jersey Sierra Club director, and recontamination or missed contamination can be a huge problem.

Tittel said he has seen similar patterns in New Jersey. In 1979, Tittel helped show EPA employees where the Ford Motor Company dumped industrial waste into abandoned mine pits. Since then, he has seen the mess declared a Superfund site, marked safe, become a Superfund site again and spawn a lawsuit that Ford settled in 2009 as locals continued discovering more hazards.

“It’s sort of a benign neglect when it comes to these sites,” Tittel said. “Government just wants to get it over with because it’s taking so long. They end up cutting corners or looking the other way.”

A Ford spokesperson said the company takes its environmental responsibility seriously and has been working with state and federal officials to clean up the site.

Retesting soil does not appear to be standard at other sites, according to reviews examined by the Flatwater Free Press and ProPublica. But it should be, said Debbie Chizewer, a managing attorney with the environmental law group Earthjustice. Without ongoing testing, the EPA can’t really know if its solution is working, she said, and residents won’t know how toxins in the environment are impacting their health.

“I think for the five-year review to be meaningful, you need to do testing,” she said.

Ashford said the EPA retests properties on a case-by-case basis, such as when construction disturbs the soil. The periodic reviews, which in Omaha have led to an ongoing reevaluation of the site’s cleanup level, allow the EPA to ensure these unique, complex sites protect people and the environment over time, he said.

Steve Zivny, who leads Omaha’s Lead Information Office, also said new testing and cleanup decisions depend on factors such as whether kids live at the home and whether they have tested for a high lead exposure.

The EPA’s reviews of the Omaha site do point to some potential problems. In 2024, inspectors found 98% of the lawns had been disturbed, indicating a risk that buried lead could be exposed. That includes having weeds, bare soil or demolished buildings. But the EPA tested only 32 sites where homes had been demolished and found six exceeded the cleanup level. To them, that indicated the solution was “generally protective; however, more data should be collected to support this conclusion,” according to the report.

Those figures, however, trouble Ian von Lindern, who oversaw lead cleanup at an Idaho Superfund site for more than 30 years. He doesn’t doubt the federal government did a good job hauling away tons of toxins in Omaha. But he’s sure they couldn’t get all of it.

At the Idaho site, the EPA requires people to request permits from a local health district before digging in their yards. Local health employees can also test residents’ dirt, and, if it’s above the cleanup level, it may qualify for further remediation.

Without someone keeping a close eye on the fixes, recontamination can occur as people dig up lead-contaminated soil or unremediated soil is allowed to blow around.

“Those remedies are, I don’t want to use the word failing, but they’re becoming less effective,” he said.

Royers worries many homes in Omaha fit that description.

This summer, the educator is letting the weeds grow freely in her garden. Pretty soon, the city is going to replace it anyway.

The thought makes her feel guilty. More people should know about potential lead in their yard and have access to tests and cleanups. But that would require acknowledging that after decades and hundreds of millions of dollars spent, there are cracks in the cleanup. Royers isn’t sure that will happen.

“The priority is pretending like things are OK,” she said. “Clearly it’s not.”

The post The EPA Spent Millions Cleaning Up a Massive Superfund Site. Our Tests Found Toxic Levels of Lead in Many Yards. appeared first on ProPublica.

Bonjour,

J’ai commencé la création d’un formulaire (mon premier) auquel j’ai joint un fichier. J’ai ensuite modifié ce fichier et j’ai donc attaché la nouvelle version. Mais je ne trouve pas comment supprimer la version obsolète. Comment faire ?

Merci d’avance,

4 messages - 2 participant(e)s

Lire le sujet en entier

⚠️ Nous venons de publier la version 8.2.4 de #PeerTube !

Cette version corrige différentes vulnérabilités avec un niveau de gravité allant de moyen à élevé.
Plus de détails à ce sujet dans les prochains jours !

Veuillez mettre à jour votre PeerTube dès que possible.

Analizzare i log del proprio sito web può rivelare sorprese inaspettate. Spesso, si notano centinaia di visite attribuite a "Googlebot", e la prima reazione è di sollievo: il crawler di Google sta indicizzando le pagine. Ma è davvero così? La realtà è che molti di questi accessi provengono da un falso Googlebot, poiché l'identità di chi si connette a un server è più facile da falsificare di quanto si pensi.

Perché i log registrano così tanti falsi Googlebot?

Molti bot si spacciano per Googlebot per una ragione semplice: gode di un trattamento privilegiato su quasi tutti i server. Gli amministratori di sistema, per non compromettere l'indicizzazione, evitano di bloccarlo. Questa situazione crea un'opportunità per software di terze parti. Infatti un bot malevolo o uno scraper ottiene enormi vantaggi semplicemente fingendosi il crawler ufficiale di Google, tra cui:

• Evitare i blocchi: numerosi sistemi di sicurezza e firewall sono configurati per lasciar passare senza filtri il traffico di Googlebot.
• Superare i limiti di richiesta: a Googlebot vengono spesso concessi limiti di frequenza (rate limiting) molto più ampi, che gli consentono di scansionare più pagine in meno tempo.
• Aggirare i CAPTCHA: un finto Googlebot può bypassare i controlli anti-automazione, accedendo a contenuti altrimenti protetti.

Un falso log da un Googlebot, trucco a costo zero, è particolarmente utile per chi fa scraping di prezzi, contenuti o dati sensibili, aprendo porte che dovrebbero rimanere chiuse.

Per approfondire l'argomento e capire quali altri tattiche usano gli hacker per accedere al tuo sito, leggi anche il nostro articolo sul tema.

User-agent: l'identità che chiunque può falsificare

Il problema nasce dal funzionamento dello user agent. Infatti si tratta di una semplice stringa di testo che un client, come un browser o un bot, invia al server per identificarsi. Il protocollo HTTP, tuttavia, non include alcun meccanismo per verificare che questa dichiarazione sia vera.

Un client può quindi presentarsi con una stringa apparentemente legittima: Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html) Vederla nei log fa pensare subito al crawler ufficiale, ma non stabilisce alcun legame crittografico o verificabile tra l'indirizzo IP della richiesta e l'infrastruttura reale di Google. In pratica, il falso log di un Googlebot è come se un estraneo si presentasse a una festa dichiarando un nome falso, senza che nessuno gli chieda un documento di identità.

Come verificare se un log di un Googlebot è falso?

Fortunatamente, esistono metodi affidabili per smascherare gli impostori, raccomandati da Google stessa.

Controllo degli intervalli IP di google

Il primo metodo è molto diretto. Google pubblica e aggiorna un elenco dei suoi intervalli IP ufficiali in un file JSON. È sufficiente programmare uno script per scaricare questo file e confrontare l'IP registrato nei log con le reti autorizzate (sia IPv4 che IPv6). Se l'indirizzo IP del visitatore non rientra in questi intervalli, si ha la certezza matematica che sia un falso log di un Googlebot.

La doppia verifica DNS

Questo secondo metodo è ancora più rigoroso e si basa su una sequenza di controlli DNS, considerata la prova definitiva.

1. Ricerca DNS inversa (PTR): si esegue una ricerca sul record PTR dell'IP di origine. Se è un vero crawler di Google, il nome host risultante deve terminare con googlebot.com o google.com.
2. Ricerca DNS diretta (A/AAAA): a questo punto, si esegue la verifica opposta. Si risolve il nome host ottenuto nel passaggio precedente e si controlla che l'indirizzo IP di partenza sia presente nella lista di IP restituiti.

Se entrambi i passaggi hanno successo, puoi essere assolutamente certo che la visita provenga da un crawler legittimo di Google.

Per approfondire l'argomento, prova anche a leggere questo nostro articolo: "Come rilevare e bloccare l'attività dei bot".

Cosa si scopre dopo una verifica di un falso Googlebot log?

Applicando questi controlli, il quadro del traffico sul proprio sito cambia radicalmente. Quella che sembrava un'intensa attività di indicizzazione si rivela spesso per quello che è: un'orda di bot sconosciuti. Un picco di traffico che credevi positivo potrebbe nascondere uno scraper aggressivo che sta rubando i tuoi contenuti tramite un falso log di un Googlebot.

In più un consumo di banda anomalo potrebbe essere causato da sistemi che mappano il sito alla ricerca di vulnerabilità. Analizzare i log con questi strumenti permette di distinguere il traffico prezioso da quello dannoso, proteggendo le tue risorse in modo efficace. La prossima volta che vedrai un'attività sospetta da "Googlebot", saprai esattamente come smascherare l'impostore.

L'articolo Falso Googlebot nei log: come riconoscere i crawler e proteggerti proviene da sicurezza.net.