A bearded seal pup, one of the species of Arctic seal that are increasingly threatened by climate change. Kit Kovacs

Melting sea ice and deforestation are continuing to drive many species toward extinction, with the latest Red List of Threatened Species showing that more than a quarter of all animals, plants and fungi assessed are at risk.

Three species of Arctic seals now face extinction due to global warming, while half the planet’s birds are in decline due to habitat loss. But the return of the green sea turtle shows how, with coordinated conservation efforts, things can be turned around.

The red list, produced by the International Union for Conservation of Nature (IUCN), is the most authoritative global assessment of extinction risk of species. Released today at the IUCN World Con

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