Collecting data from the most extreme places on Earth can require the skills of the most extreme outdoor enthusiasts.

Modern fences are often so thoroughly impenetrable, they can slice up already-scarce habitats and restrict wildlife to increasingly small scraps of land.

A Soviet zoologist with a passion for long-extinct mammals set out to reinvigorate the landscape of the Caucasus in the 20th Century. Azerbaijan still bears the scars of his ambition.

In the Highlands of Scotland, a series of last-ditch efforts are being used to try to save the critically endangered capercaillie. Will it be enough to save this magnificent bird?

Blind spiders and whip scorpions, the future of climate change, photosynthesis in the dark – here's what the deepest places on Earth can reveal about life and the universe.

From harbouring flamingos in bathrooms to ensuring koalas' specialised foods, when hurricanes hit, zoos need contingency plans at the ready.

The illustrious Moo Deng has attracted a frenzy of attention. But in the wild, her species is quietly disappearing.

Sri Lanka's capital is transforming floating garbage patches into biodiverse wetlands which are teeming with life.