Electric eels hunt in pitch-black, murky waters by generating electric fields around their bodies. Now, Chinese scientists have mimicked this natural radar, giving robots the ability to “feel” objects without making physical contact. “We want the machine to sense an approaching target – distinguish its material and surface condition – before any physical contact,” said Zhang Weiqiang, a professor at Xidian University, in a video interview last week. The team’s work was published last month in...

Picture a fisherman hauling in his nets on a calm morning at sea, when his smartwatch suddenly vibrates with an alert: “Magnetic anomaly detected – possible submarine passing 500 metres below.” Far‑fetched as it sounds, Chinese scientists have just taken a decisive step towards making that scenario real. A team from the Hefei Institutes of Physical Science and the Ningbo Institute of Materials Technology and Engineering, both under the Chinese Academy of Sciences (CAS), has created a Hall‑effect...