Australia's swamp tortoise is one of the most endangered species in the world. This species lives in wetlands that are under threat due to rising temperatures and a reduction in rainfall.

In an effort to save the tortoise, researchers are trialling a controversial strategy called assisted migration. This approach has seen captive-bred tortoises released in other wetlands some 330 kilometres south of where they are naturally found. The aim is to see whether the animals can tolerate cooler climates, and whether this new habitat might ensure the species’ future as the planet warms.

While many conservation biologists and land managers have long resisted the idea of assisted migration, attitudes are changing and other projects are beginning to test whether it can protect protect animals at risk from climate change.

This is an audio version of our Feature: These animals are racing towards extinction. A new home might be their last chance

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