Extras
On the plains of South Africa, an army of dung beetles recycle the dung of large mammals.
Ummat Somjee goes to Thailand to observe the cultural tradition of fighting beetles.
An intimate portrayal of three families confronting the unique challenges of Alzheimer’s.
Gavin Svenson heads to the Brazilian rainforest to sample the diversity of mantises.
Nancy’s wedding plans take a surprising turn. Sister Catherine takes her First Vows.
Forensic science is put to the test after the first-ever staged multi-vehicle pileup.
An elusive photographer uses street art tactics to share his previously unknown work with the world.
Jesse Barber and Akito Kawahara study the evolutionary arms race between bats and moths.
Monarch butterflies winter in the fir forests of Michoacan, Mexico, after an epic migration.
Latest Episodes
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Be Smart Season 13
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Be Smart Season 12
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Be Smart Season 11
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Be Smart Season 10
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Be Smart Season 9
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Be Smart Season 8
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Be Smart Season 7
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Be Smart Season 6
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Be Smart Season 5
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Be Smart Season 4
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Be Smart Season 3
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Be Smart Season 2
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Be Smart Season 1
The oldest rocks on Earth are more than just ancient—they’re time machines!
This is one of the weirdest mysteries of human evolution: Why do we have grandmas?
Insects and birds have an awesome superpower that repels water and keeps them airborne in the rain.
Why do some people taste music or hear colors? Let’s talk about synesthesia.
How a chemical in lizard spit inspired one of the most important medical advancements.
These diamond makers create one of the most amazing materials on Earth — from dead people.
Learn nature’s ultimate game of hide-and-seek, and the way to win this game is all in the brain.
Nature has had to come up with some crazy ways to survive winter. None are weirder than hibernation.
Political scientist Don Green joins Joe to figure out the complex psychological and social factors t
