Global conservationist M. Sanjayan travels to California as it suffers the longest dry period in a thousand years. He then visits the Arctic where temperatures are increasing rapidly; the Indian Ocean where coral islands are increasingly at risk; and Kenya where a remote community is in search of a cheap and reliable alternative supply of fresh water.

Global conservationist M. Sanjayan continues his journey in east Africa, where heroes are protecting the elephants in Kenya. Then, he travels to Brazil where climate change and cattle are bringing humans into conflict with some of the planet’s most iconic animals. Finally, in Cambodia, he discovers the way people living on southeast Asia’s largest lake are adapting to a fishing crisis.

Innovative efforts to confront climate change in Australia, Brazil, California and Kenya; with Dr. M. Sanjayan.

It’s year two of BBC’s ambitious, seven year project charting the fortunes of six of Earth’s most threatened ecosystems, and in the second episode we join three presenters as they celebrate the experts and communities fighting to rebalance another trio of vulnerable habitats.

A visit to the Maldives focuses on coral reefs and the urgent efforts to help them survive climate change.

The largest river restoration project in U.S. history aims to bring life back to a sacred river in northern California.