Extras
What if violent asteroid impacts actually jump-started life on Earth? Explore a dramatic theory.
Follow the complex lives of giant elephant bulls in Amboseli and Mount Kilimanjaro.
In Amboseli, one male’s opportunity attracts rivals — and the attention of watching juveniles.
Male elephants form powerful bonds — and even become adoptive parents together.
James tends to an aging dog while Jimmy stumbles upon Siegfried and Susan... and a horse.
Return to the Yorkshire Dales for an all-new season on Sunday, January 11, 2026 at 9/8c.
Why experts are divided over the new federal dietary guidelines
A year after the devastating LA wildfires, communities struggle with rebuilding
Ian Bremmer discusses the geopolitical landscape.
Minneapolis police chief urges ‘lawful, peaceful’ response to ICE shooting
Latest Episodes
Follow the complex lives of giant elephant bulls in Amboseli and Mount Kilimanjaro.
Follow a female mountain lion in the Montana mountains over the course of a decade.
See how the Arctic’s most enigmatic animals are coping as the sea ice melts.
Discover the wildlife of Transylvania, a mysterious region hiding some of Europe’s last wilderness.
A Tasmanian man befriends a platypus while protecting the species from urban development.
Discover the powerful effect hummingbirds have over their wild neighbors in Costa Rica.
Join scientists as they go to extraordinary lengths to understand wild dogs.