Science

Some people daydream for hours on end, playing out a single storyline for decades – and it can be hugely distressing. Here's how to tell when your daydreaming has gone too far.

Humanity’s artificial glow is swallowing the night sky. Even astronomers in this remote observatory in the South American desert cannot escape it.

Bornholm is a remote island in the heavily polluted Baltic Sea. Now the windswept "Danish paradise" finds itself at the centre of an environmental and geopolitical crisis.

Children are less physically active than they used to be. Scientists are finding effective ways to encourage children to move more, leaving lasting benefits on their health.

Research shows that considering how we will be remembered when we die can help us improve our mental health and find more meaning during our lives – including if we are still young.

The new Icarus satellite is tracking signals hidden in animal behaviour – which could save the lives of cheetahs, rhinos and elephants.

In her new book, The 21st Century Brain, scientist Hannah Critchlow explores the overlooked skills that will be necessary to flourish in the age of AI – and how we can cultivate them.