Consider a plastic bottle bobbing on the ocean’s surface, thousands of miles from the nearest coastline. To the naked eye, it appears lifeless – just another piece of discarded waste adrift on an endl

Or the air I breathe? Or the burger I just ate? Inside one man’s search for the tiny particles that might (might!) be causing big problems for every human being on the planet

What the scientists are saying… Falling puffin numbers ...

The SAS (Special Air Service) make routine use of sleep-deprivation exercises in their selection process, and these often feature in later training. Hallucinations during such exercises are very commo

LATEST HEALTH SOLUTIONS FOR YOUR MIND AND BODY

Our round-up of the funny, fascinating and unusual stories this fortnight