The Frog Species That Can Evolve At Super Speed And The Suicide Of The Scientist Studying Them

Curated by

Experience the darker side of evolutionary theory. Jean-Baptiste Lamarck's theory of evolution (you can pass down traits that you pick up during your own lifetime) was largely considered to be completely bogus until some fast-evolving frogs gave it a second wind. Then things got really crazy.

Skip ahead to 22:48 for a mind-blowing update to classic evolutionary theory. A rat mother's licking can fundamentally shift the personality of the baby? SCIENCE!

Next bit of Upworthiness:

Flash Video Embed

This video is not supported by your device. Continue browsing to find other stuff you'll love!

Hi there, internet friend. We need to talk. You're using a painfully old web browser, and frankly, it's getting a little weird. It's not safe, and we want the best for you. We think it's time to upgrade.

Download Google Chrome, and try it for a week. Don't think about it, just do it. You'll thank us later.