Some sea snakes have re-evolved the ability to see more colours
12 July 2023
Most snakes can see a limited range of colours, but the blue-banded sea snake has regained genes lost millions of years ago that may let them see ultraviolet and blue light
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Premium
Early humans made jewellery from giant sloth bones
11 July 2023
The bones were shaped by people using stone tools before they were fossilised, adding new evidence for humans’ arrival in the Americas before the end of the last glacial period
Decade-long struggle over maths proof could be decided by $1m prize
11 July 2023
Mathematician Shinichi Mochizuki's Inter-universal Teichmüller theory has attracted controversy since it was published in 2012, with no one able to agree whether it is true. Now, a $1 million prize is being launched to settle the matter
Carbon tax on luxuries is fairer way to cut emissions, finds analysis
11 July 2023
Instead of a uniform tax on carbon emissions, countries should apply higher taxes to luxury products to reduce social inequality and tackle climate change, say researchers
Blanket for electric cars helps preserve battery performance
11 July 2023
The lithium-ion batteries found in electric cars work best when kept within a certain temperature range, so researchers have created a blanket to keep your car cool in the sun and warm in the cold
Meteorite left Earth then landed back down after round trip to space
11 July 2023
Most of the meteorites found on Earth come from asteroids, but a few come from other bodies like Mars and the moon. Now, researchers say they have discovered a new kind - a rock originally from Earth that went to space then came back
