Chemicals and particles in our atmosphere can have a catastrophic impact on animals, plants and humans. But what are the causes of air pollution?

This weaponised, gel-like substance is an incendiary that burns and adheres to surfaces

In January 2022, a volcanic eruption ripped apart the underwater cables that connect the Pacific island of Tonga to the world. At a stroke, the country was plunged into the kind of isolation it hadn’t experienced in more than a century.

GLOBAL EYE

Fossilised dinosaur prints, volcanic craters, ice-carved corries – there are places in Britain where the landscape is a portal to the past. Hanna Lindon takes a stroll through 4 billion years of British history

How intense heat and steam are generated in these hot therapy rooms