The groundbreaking amniotic egg - April Tucker

View full lesson: http://ed.ted.com/lessons/the-game-changing-amniotic-egg-april-tucker 350 million years ago, eggs could not survive far from water, therefore animals were water-bound. That is, until the amniotic egg, which allowed animals to live a fully terrestrial life. April Tucker peels back each layer of the amniotic egg, revealing how truly extraordinary this evolutionary marvel is. Lesson by April Tucker, animation by Pew36 Animation Studios. Learn more about your ad choices. Visit megaphone.fm/adchoices