Painted Wolf • 2018 • episode "S1E4" • Dynasties

28:20

Hybrids can be bizarre and they can be deadly. We look at two hybrid animals that owe their existence to human interference - the pizzly bear (a cross between a polar bear and grizzly), which has come into being because of global warming, and the killer bee, brought into existence because of the transfer of African bees to South America.

S4E1 • Natural Curiosities • 2018 • Nature

57:29

Two out of five wild plants are threatened with extinction. Today people are finding remarkable ways to help them, and so make our world a little greener and a little wilder.

S1E5 • The Green Planet • 2022 • Nature

54:16

In Southeast Alaska, there's an ice-bound Eden that harbours possibly the richest temperate rainforests of all.

S1E6 • Eden Untamed Planet • 2021 • Nature

44:33

Part wolf, part coyote this new hybrid species is the subject of a startlingly beautiful new film called Meet the Coywolf. A documentary that will both shock and amaze you. Coywolves emerged from a thin strip of land at the southern end of Algonquin Park less than a hundred years ago. Their arrival on the scene marks a rare event, the creation of a brand new hybrid species. A formidable wild animal that has spread across North America at an unprecedented pace, returning a new top predator to territories once roamed by wolves. Zoologist Roland Kays of the New York State Museum has been tracking these new creatures and describes them as having "a coyote like skull with wolf like teeth".

S52E10 • The Nature of Things • 2013 • Nature

58:00

Sir David Attenborough chooses his favourite recordings from the natural world that have revolutionised our understanding of song. Each one - from the song of the largest lemur to the song of the humpback whale to the song of the lyrebird - was recorded in his lifetime. When Sir David was born, the science of song had already been transformed by Charles Darwin’s theory of sexual selection: singing is dangerous as it reveals the singer’s location to predators, but it also offers the male a huge reward, the chance to attract a female and pass on genes to the next generation. Hence males sing and females don't. Today, new science in the field of birdsong is transforming those long-held ideas. Scientists are discovering that, in fact, in the majority of all songbird species, females sing - and it is only now they are being properly heard. Through this revelation and others, we can understand that animal songs are marvelous examples of the spectacular survival strategies that species have developed in order to stay alive.

2021 • Nature

4:00

Humans, octopi and pine trees alike are all made up of cells, tiny but sophisticated systems that keep life going. Cells are almost like tiny factories run by robots, with the nucleus, DNA, proteins, lipids, and vitamins and minerals all playing critical roles. George Zaidan and Charles Morton lay out the blueprint of a cell and explain how biochemistry binds all life together.

TED-Ed • Nature