Steve Backshall, Chris Packham and Ella Al-Shamahi visit the Maldives, Iceland and Cambodia, charting the fight to save the planet’s most endangered ecosystems.

Liz Bonnin, Gordon Buchanan and Ade Adepitan visit endangered ecosystems in California, Brazil and Kenya to see how people are attempting to rebalance local habitats.

In the second year of a seven-year project, six presenters chart the fight to save the planet’s endangered ecosystems. In this episode, we visit the Maldives, USA and Greenland.

In the second year of a seven-year project, six presenters chart the fight to save the planet’s endangered ecosystems. In this episode, we visit Brazil, Cambodia and Kenya.

As part of a seven-year project on threatened ecosystems, we take a special in-depth look in this third episode at one of the habitats under most urgent threat from climate change, coral reefs. What are the innovative techniques that could provide a much-needed lifeline and hope for the future? Globally, coral reefs are at crisis point. Half of all coral reefs have already been lost or severely damaged, and experts predict that, without action, nearly all reefs could die off in the next 20 to 30 years. When the ocean is too warm for too long, corals bleach and die. 2023 saw record sea temperatures around the globe, and as bleaching events become more frequent, there's a race against time to find ways to help damaged reefs recover.