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The Mystery of Earth's Disappearing Giants
Video has Closed Captions
Special | 21m 29s | Africa is the only continent where these megafaunas still exist. But, why? (21m 29s)
Dung Beetles: The Poop-Rolling Stargazers of the Serenget
Video has Closed Captions
Special | 17m 8s | We meet some interesting bugs that use truly extreme senses to navigate their world. (17m 8s)
These Butt-Tickling Ants Are Endangered Butterfly Bodyguards
Video has Closed Captions
Special | 20m 59s | We look at some surprising ways that species use teamwork in order to survive. (20m 59s)
These Death-Eating Scavengers Are Real Life-Savers
Video has Closed Captions
Special | 29m 33s | We look at ecosystems at their largest and smallest scales of time and size. (29m 33s)
Elephant Moms Carry the Wisdom of Generations
Video has Closed Captions
Special | 25m 36s | Seemingly distant ecosystems, even half a world apart, are connected in surprising ways. (25m 36s)
Are Some Species More Important Than Others?
Special | 25m 47s | Can an ecosystem survive without its keystone species? (25m 47s)
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Providing Support for PBS.org
Learn Moreabout PBS online sponsorshipHow to Watch Be Smart
Be Smart is available to stream on pbs.org and the free PBS App, available on iPhone, Apple TV, Android TV, Android smartphones, Amazon Fire TV, Amazon Fire Tablet, Roku, Samsung Smart TV, and Vizio.
About the Host
Joe Hanson, Ph.D., is a science writer, biologist, educator, and internationally recognized YouTube creator. He is the creator and host of Be Smart, an award-winning science education show from PBS that celebrates curiosity and the pleasure of finding things out. He received his Ph.D. in cell and molecular biology from the University of Texas at Austin, and his science writing has been published in WIRED, Nautilus, Scientific American, Texas Monthly, and more.
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