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.
Esau’s journey spans borders that elephants cannot see — but must obey.
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
White House says U.S. will control Venezuelan oil industry 'indefinitely'
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