The F-35 and F-22 may be among the world’s most advanced stealth fighters, but they cannot hide one thing: heat. When heat-seeking missiles lock onto aircraft, fighters release flares to confuse infrared sensors and break missile tracking. But the infrared signals produced by fighters, including heat from engine exhaust and air friction over the fuselage, are different from those generated by flares. These heat signatures could provide valuable infrared information for target detection and...

A study analysing data from hundreds of countries and regions suggests China’s Belt and Road Initiative is linked to better governance and economic development, according to researchers from Nanjing University. They found the trade and investment scheme – which spans Africa, Asia, Europe and beyond – was also associated with improved corruption control and that it reduced debt risks. The team – from the university’s Centre for Asia-Pacific Development Studies and led by Mao Weizhun – said their...