Videos of playlist "PLsNB4peY6C6KfxJAKFf6I3Dm4mJVcL107"
11:32 / The Sharpest Object In The World Can't Cut Anything
3:29 / Why Do Razor Blades Dull so Quickly?
4:13 / How Can a Saw Know What It’s Cutting?
11:19 / 6 Surgical Devices Inspired by Nature
3:30 / The Frog with Hidden Claws
10:28 / 7 Animals with Super Weird (and Sometimes Horrifying) Teeth
30:08 / Ammonite Fossils and Sharp Animals w/Kallie from PBS Eons | SciShow Talk Show
