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Gross Science
Why Do I Have To Poop When I Run?
Season 2
Episode 12
Ever get an uncontrollable urge to poop in the middle of a long run? You're not alone.
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2:43
Even the mighty T. rex was covered in creepy, crawly parasites.
4:59
Rabies may have lead to legends of werewolves, vampires, and zombies.
2:42
These frogs can have up to TEN back legs.
3:59
I ate a lot of bugs...and (mostly) liked them.
3:31
What should you do with the borax you have leftover from making slime?
4:46
How does lead damage our brains—and what can we do to stop it?
4:16
Bees get more than just nectar from the flowers they visit.
4:46
These extinct frogs used to barf up their babies.
4:05
The plant Hydnora africana is a parasite that smells foul...
3:42
Your gross earwax can reveal a ton about who you are.
5:24
Fear may be able to spread from person to person—just like a virus.
4:25
You swallow a ton of snot every single day. Welcome to the gross world of mucus.