The Painted Lady Butterfly • 2019 • episode "S1E4" • Secret Migrations

58:27

In this episode Brian uncovers how the stunning diversity of shapes in the natural world are shadows of the rules that govern the universe. In Spain he shows how an attempt by hundreds of people to build the highest human tower reveals the force that shapes our planet. In Nepal, honey hunters seek out giant beehives that cling to cliff walls. The perfect hexagonal honeycombs made by the bees to store their honey conceal a mathematical rule. Off the coast of Canada, Brian explains how some of the most irregular, dangerous shapes in nature - massive icebergs that surge down from Greenland and into shipping lanes of the Atlantic - emerge from a powerful yet infinitely small force of nature. Even the most delicate six-sided snowflake tells a story of the forces of nature that forged it.

Part 1 • Forces of Nature With Brian Cox • 2016 • Nature

14:12

The Cretaceous was the golden age on ancient Earth. Magnificent and terrifying dinosaurs like Triceratops and Tyrannosaurus ruled the land. But they were all wiped out in an instant by one of the most powerful impacts our Earth has ever endured -- a collision with an asteroid!

S1E3 • Ancient Earth • 2017 • Nature

44:22

With the arrival of spring, days grow longer and temperatures rise. But spring in Alaska is short. Animals have two months to feed, and start a family, while avoiding predators. Spring is also the time that millions of birds return to Alaska.

S1E2 • Alaska: A Year in the Wild • 2017 • Nature

29:37

Pumas are also known by the names of cougar or mountain lion. However, these cats are only distantly related to lions. They're much more closely related to cheetahs. And while pumas are often found in mountains, they're just as at home in the lowlands, dense forests, or deserts.

S1E3 • The Secret Lives of Big Cats • 2019 • Nature

89:43

The Messenger explores our deep-seated connection to birds and warns that the uncertain fate of songbirds might mirror our own. Moving from the northern reaches of the Boreal Forest to the base of Mount Ararat in Turkey to the streets of New York, The Messenger brings us face-to-face with a remarkable variety of human-made perils that have devastated thrushes, warblers, orioles, tanagers, grosbeaks and many other airborne music-makers. In ancient times humans looked to the flight and songs of birds to protect the future. Today once again, birds have something to tell us.

2015 • Nature

58:30

Fur seals and flightless barnacle goose chicks fight to survive the challenges of infancy.

S1E1 • Life Story • 2014 • Nature