The historian Margaret MacMillan on the impact of the Trump-led American withdrawal from world leadership. Plus: David on the ...

From the first woman to circumnavigate the globe by boat to the first to scale Everest, we’ve rounded up the most fabulous ...

Minerals from a cave in Greenland reveal that the Arctic was warm and had no permafrost, with CO₂ levels similar to today's.

Researchers bundled in down jackets toiled around the clock in these snowy tunnels as a massive drill rig churned downward to ...

Hollywood is rolling out the red carpet for a slate of sequels – or should we say, sequels to sequels – in a bid to lure ...

Scientists are increasingly concerned that the planet is headed for massive, irreversible changes due to global warming. In ...