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Darwin's Unexpected Final Obsession

Season 7 Episode 21 | 12m 12s

After having solved the small matter of evolution by natural selection - becoming one of the most famous scientists in the world in the process - Charles Darwin turned his focus to a different personal obsession…

Aired: 05/19/25
5,700 years ago, woolly mammoths crossed a remote tundra island off Alaska.
Why did vertebrates conquer both the land and the air before the depths of the sea?
Long-extinct dinosaurs may still haunt us—possibly driving us to age faster than any vertebrate.
Only twice in Earth's history have supermountains risen, and both times reshaped life forever.
Was the T-Rex given the wrong name?
500+ pterosaur fossils found at Solnhofen may be hiding a dark secret distorting our view of them.
Why are our teeth so sensitive? The answer originates in the armored skin of ancient fish.
For flowering plants to take over, they first helped burn the old world—and then put the fires out.
Ancient weeds mimicked crops, tricking farmers into domesticating friends—and enemies—by mistake.
Brains and brawn aren’t opposites—they’ve been linked far longer than we might think.