Ade Adepitan visits Scandinavia, meeting climate change activist Greta Thunberg in Stockholm to find out how the young generation is determined to turn things around. He also learns how the Danish capital Copenhagen has pledged to be carbon neutral by 2025, and has a tour of a Gothenburg house installed with a hydrogen fuel system that could play a massive part in a carbon-free future.

In the second episode, Ade travels through the stunning water world of Bangladesh's Ganges delta, then into the remote Himalayan Kingdom of Bhutan.

Ade begins in the stunning Solomon Islands, and then travels down the east coast of Australia – from the Great Barrier Reef to Tasmania. He sees missing islands in the Solomon Islands, learns about the ‘feminisation' of green turtles and comes face-to-face with the terror of a bushfire. But he also finds hope in a visit to Tasmania, a region that is already entirely powered by renewable energy.