Wildlife biologists released a few wild turkeys in Vermont in 1969. There's now a thriving population of 45,000.

Should rich countries and fossil fuel companies pay for the climate losses and damages they have caused?

Facing erasure due to climate change, the Pacific Island nation of Tuvalu is digitally backing up everything from its houses to its trees as it endeavors to save whatever it can.

Over the course of 10 years, the Billion Oyster Project, one of New York's most ambitious rewilding initiatives, has planted 150 million larvae in its harbour. Did it work?

As countries negotiate a new global goal to raise climate cash, these five charts show why discussions are so fraught.

The fear of nuclear war forced nations to come together to stop the spread of atomic weapons. Could a similar idea curb the use of fossil fuels?

China produces more clean energy than any other country. Now it's rolling out an ultra-high-voltage grid to match – will its strategy of going big pay off?

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?