The questions we have about numbers are uncountable. But here are a few of them: Where does zero come from? How is there more than one kind of infinity? What is it like to do math when numbers have different colors — and personalities?

Hoax Hunters: Can a lake turn animals to stone?
31:47

Why do skunks stink?
30:49

Brains On presents - Rocket women: How a secret program paved the way for female astronauts
36:01