For a different sort of challenge, try this cryptic crossword. Subscribe today to get access to dozens more, and a new crossword every week. Download the app ...

Think of packing as a real-life version of Tetris. You should roll soft, flexible clothes like T-shirts and pyjamas. Some advise folding formal wear like jackets and shirts, but this can introduce ...

There are a couple of different ways that cloud inversions can produce optical effects, explains one of our readers ...

An optometrist tells us how we might test a cheetah’s eyesight, and dog owners share their stories of their pets’ ...

The answer to this question depends on how you think about quantum gravity, explains physicist Vlatko Vedral ...

It is 1995. Geocities, Yahoo! and Netscape are kings of a burgeoning internet. Spending an hour by your screeching dial-up modem on the information superhighway is thrilling. And the film Hackers is ...

Lise Barnéoud's Hidden Guests shows how this fascinating new field brings with it profound implications for medicine, and ...

Tom Gauld's weekly cartoon ...

This week's cartoon from Twisteddoodles ...

Quantum physicist Vlatko Vedral proposes a radical new vision of reality, one in which observers don’t exist, there are no ...

Neurologically, the flexibility of the future promised by liberal democracy can be a challenge because it brings with it ...

The four-year-old, called Luca, was one of three big cats to be examined in a mobile CT unit at The Big Cat Sanctuary in Kent ...