Why John Stewart Bell has been haunting quantum mechanics for decades
John Stewart Bell devised a way to measure the strange correlations allowed in the quantum realm CERN Some people think
Starlink satellites are leaking radio signals that may ruin astronomy
A batch of Starlink satellites launched on a Falcon 9 rocket SpaceX SpaceX’s Starlink satellites are leaking radio waves to
US stops endorsing covid-19 shots for kids – are other vaccines next?
US Secretary of Health and Human Services Robert F Kennedy Jr Tasos Katopodis/Getty One of the top vaccine experts at
Crafty cockatoos learn to use public drinking fountains
Cockatoos in Sydney, Australia, have learned to use public water fountains by twisting a handle, despite how difficult they are
Any wall can be turned into a camera to see around corners
Technology for seeing around corners would be of use to the military Matthew Horwood/Getty Images An ordinary camera could soon
Before the Great Wall, Chinese rulers built a shallow ditch
Archaeologists excavate part of the medieval wall system in Mongolia Gideon Shelach-Lavi et al. 2025 Long before the Great Wall
Trump’s Golden Dome defence project could spur a space arms race
US President Donald Trump (left), accompanied by US Secretary of Defense Pete Hegseth (right), announces the Golden Dome missile defense
New dwarf planet spotted at the edge of the solar system
The orbits of a potential dwarf planet called 2017 OF201 and the dwarf planet Sedna Tony Dunn A potential dwarf
AI doesn’t know ‘no’ – and that’s a huge problem for medical bots
AI models can struggle to understand the captions on some medical images Getty Images Toddlers may swiftly master the meaning
US east coast faces rising seas as crucial Atlantic current slows
The AMOC is a system of ocean currents that circulates water within the Atlantic Ocean NASA/Goddard Space Flight Center Scientific