16/18 A look at people living with OCD, the therapy available and what neuroscience can offer.
3/3 Steve Backshall descends into the crater of a giant extinct volcano in New Guinea.
2/3 A tree-shrew and a chipmunk face terrifying predators as they search for vital food.
6/6 Coast explores the endless nooks and crannies of our curving and twisted coastline.
2/3 In the South Atlantic, chains of extraordinary islands are packed with marine life.
1/3 In Africa's savannah, a baby elephant shrew fights for life.
2/2 The stories of people fighting to survive - and even triumph - in Earth's natural wonders.
2/10 Natural World reveals the magic behind owls' superpowers.
David Attenborough returns to the island of Madagascar on a very personal quest.
3/3 Follows the animals' fortunes through the wet and dry seasons in this island of extremes.