When will the next mass extinction occur? - Borths, D'Emic, and Pritchard

source: TED-Ed       2016年1月21日
View full lesson: http://ed.ted.com/lessons/when-will-t...
About 66 million years ago, a terrible extinction event wiped out the dinosaurs. But it wasn’t the only event of this kind -- extinctions of various severity have occurred throughout the Earth’s history -- and are still happening all around us today. Borths, D'Emic, and Pritchard give a quick history of mass extinctions.
Lesson by Borths, D'Emic, and Pritchard, animation by Juliette Marchand.