BBC Earth HD

'S1/E3'. Simon meets members of the Civil Nuclear Constabulary.

'S5/E2 - Big Cat Special'. Steve goes in search of the deadliest cats in Africa in the carnivore capital of Zambia. He gets up close to the rulers of the Savannah - the lions and leopards.

'S5/E3 - Very Hungry Hippos'. Steve heads to Zambia for the first time, where he hears hippo communication on a whole new level, spots a high-diving croc and meets some incredible sniffer dogs.

'S5/E4 - Steve's River Expedition'. Steve heads to Suriname, a country with more forest than anywhere else on earth. He kayaks upriver in search of some deadly critters.

'S3/E4 - Fresh Water'. Fresh water is the lifeblood of planet Earth, where incredible animal dramas play out. From death-feigning fish to frogs that glide, each depends on fresh water for their survival.

'S3/E5 - Forests'. Sir David Attenborough journeys into the forests, where dogs communicate with whistles, treehoppers fight assassin bugs, 'spirit bears' fish, and hornbills imprison themselves in trees.

'S3/E6 - Extremes'. David Attenborough reveals how animals battle to survive the elements.

'S4/E8 - York to Edinburgh'. Escape with us aboard the magnificent steam train Tornado as its coupled up with 13 luxury vintage carriages on a 6 hour journey through Yorkshire, to Northumbria and the Borders.

'S4/E9 - Sweden'. A mid-summer railway journey through central Sweden starts in Mora on the Inlandsbanan. This town is in the county of Dalarna, the heart of Swedish traditional culture.

'S1/E5 - Fitness Tracker'. Hannah Fry finds out how 1970s car crashes helped us to count our steps, why WWII dog-fights led to a crucial health monitor and how fitness trackers are even being used to catch killers.

'S1/E4 - Episode 4'. The Okavango Delta is transformed by the arrival of the flood, bringing new challenges for the big cats. The lion cubs experience water and the danger it brings for the first time.

'S7/E3 - Buses'. The red double-decker bus is a global icon. They carry millions of passengers every day across the capital, and Gregg Wallace has special access to a bus-building factory in Scarborough, Yorkshire.

'S9/E8 - Sierra Nevada'. Ben visits snowboarding legend Mike Basich, who left professional sport to reconnect with nature in the Sierra Nevada mountains.

'S7/E16 - Bear Scare'. Sue repurposes a snow melter. Ricko repairs his cabin. Jessie builds a new dock. The Hailstones go beachcombing.

'S1/E3 - Coral Triangle'. Simon Reeve voyages across the Coral Triangle, a remote wilderness of tropical reefs and jungle-clad islands described as the Amazon of the seas.

'S1/E4 - Episode 4'. The Okavango Delta is transformed by the arrival of the flood, bringing new challenges for the big cats. The lion cubs experience water and the danger it brings for the first time.

'S1/E1 - Episode 1'. The excavation begins with the discovery of a large brick-built oven. It's a mystery as it is too big to be just for a private residence.

'S9/E8 - Sierra Nevada'. Ben visits snowboarding legend Mike Basich, who left professional sport to reconnect with nature in the Sierra Nevada mountains.

'S7/E3 - Buses'. The red double-decker bus is a global icon. They carry millions of passengers every day across the capital, and Gregg Wallace has special access to a bus-building factory in Scarborough, Yorkshire.