Chris van Tulleken explores why ultra-processed foods are so irresistible and how they have come to dominate food culture. A growing body of evidence is linking these products to declining health.

Scientists researching Alpine glaciers store ice in Antarctica. By analysing air bubbles in the ice they may be able to predict the future ...

Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient world slept only 6.5 hours a night.