Niall McCann talks to Faith Doherty, one of the world's most fearless environmental activists. Over the years she has campaigned against nuclear weapons, the theft of natural resources and more recently against deforestation in south-east Asia.

Go Grassfed - Going grassfed is not just good for you, it's good for the planet, for armers, and for their animals. In the Mid-Atlantic, USA, regenerative land management practices are critical for the health of the region's waterways, which all lead to the Chesapeake Bay. Dairy and beef cattle, sheep, and goats are ruminants that are meant to be grazers - and are healthiest and happiest when they are grazing on lush pastures, not in feed lots. Grass-based livestock farmers in Maryland and Virginia discuss why local meats and dairy, raised the right way, matters. And how it benefits all - from the soils beneath the animals to the eater. Featuring: James Beard Award Winning Chef Spike Gjerde.

Biodiversity - Threatened and Endangered Species, Invasive Species, Habitat Destruction, Wildlife Trade, Wildlife Protection and Conservation

Visit the Maasai savannah of Kenya, Africa's largest slum and its newest hydroelectric dam. Journey into the coal mines and power plants of growing Vietnam. Cross Nepal with an environmental health scientist, studying people's transition from the most dangerous cooking fuel, killing millions a year, to the safest. And bring solar electricity, for the first time ever, to the Arhuaco people of Northern Colombia. Watch this 7-part series, based on and expanded from the celebrated global energy documentary Switch On– a spectacular, unexpected journey to know and understand the issues driving energy development around the world.