Andes • 2021 • episode "S1E3" • Kingdoms of the Sky

29:13

Dr Helen Czerski looks at the anatomy of an avalanche. From shocking eyewitness footage from within an avalanche, to detailed CT scans showing the microscopic changes that cause them, we can now capture exactly what happens as snow transforms into a deadly and unpredictable danger.

Part 1 • Dangerous Earth • 2016 • Nature

45:34

As the Ganges nears the sea, it joins its mightiest tributary the Brahmaputra, creating a vast flood-prone delta. Here the bustling cities of Calcutta and Dhaka meet the wetlands, home to giant lizards and snakes, huge mean-eating crocodiles and forests full of monkeys. This is a story of human life persisting in wildly variable conditions in a domain that is still the preserve of the royal Bengal tiger.

3/3 • Ganges • 2007 • Nature

49:10

Discovering the role of beaks within various species of birds.

S1E3 • The Life of Birds • 1998 • Nature

48:03

Witness the hard knock life of male kangaroos as they engage in constant fights to determine social rank.

3/3 • Secret Life of the Kangaroo • 2016 • Nature

21:07

At critical moments in history, our second place metal was the most important metal on Earth. Big History reveals how silver's place in our minds was determined by the heat of exploding stars, and how this one metal saved democracy.

15/17 • Big History • 2013 • Nature

28:28

This episode focuses on the Jurassic period, a time when the first giant killers stalked the Earth and lurked in the seas; a time when the slightest advantage meant the difference between life and death. In North America the iconic allosaurus, an ambush hunter with a lethal bite, dominated. Not even the heavily-armoured stegosaurus was safe from this killer, and incredible evidence reveals a glimpse of a vicious battle between these two giants. Life in Jurassic oceans was no easier; in 2008, a fossil was dug out of a frozen island high in the Arctic. It was a colossal marine reptile, twice as big as most ocean predators, at 15 metres long and weighing about 45 tonnes. This was Predator X. Its skull alone was nearly twice the size of a tyrannosaurus rex's, and its bite force unmatched by anything in the Jurassic seas. The balance of power between predator and prey is a fine one, as prey continually evolves different ways to avoid predators. But for the most successful and enduring predators, the battle to survive has always been tipped in their favour.

4/6 • Planet Dinosaur • 2011 • Nature