The near 24-hour-cycle that keeps us on track is conducted by the suprachiasmatic nucleus. It’s a tiny part of our brains, but it’s super, super important.

More sport science: bats and black eyes
25:25

Sport science: softballs, baseballs, and curve balls
27:12

Is there such a thing as a blue raspberry? And why are raspberries hairy?
26:32