Early humans made red ochre crayon to draw lines on small rock 73,000 years ago. It was probably part of a larger artwork
We are starting to learn more about how gene variants influence the risk of getting breast cancer, but deciding how to use the results raises ethical dilemmas
Gluten might not cause gut problems in people who don’t have coeliac disease, but a study of 14 people suggests it may occasionally cause fatigue or depression
An antioxidant commonly sold as a food supplement has been found to limit joint damage in mice with osteoarthritis, and may lead to new treatments for people
Cut marks on giant bird bones suggest humans reached Madagascar 10,000 years ago and may have coexisted with the island’s now extinct megafauna for millennia
Face recognition technology has rapidly found its way into modern society, from policing to shopping. Is it too late to hold back the tide?
The governor of California has signed an executive order calling for state-wide carbon neutrality by 2045, followed by net negative emissions after that
Ten years after the financial crisis, a leading theory says the political upheavals that followed should now fade away. Is populism's bubble about to burst, asks Simon Oxenham
Evolution is being dropped from school biology texts in Turkey. In Hungary, academic freedoms are increasingly threatened. Time to worry, says Rachael Jolley
UK politician Tom Watson has hailed a low-carb diet for his massive weight loss and "reversal" of type 2 diabetes, and now he wants to help tackle the country's obesity crisis