View full lesson: http://ed.ted.com/lessons/why-is-mount-everest-so-tall-michele-koppes

At 8,850 meters above sea level, Qomolangma, also known as Mount Everest, has the highest altitude on the planet. But how did this towering formation get so tall? Michele Koppes peers deep into our planet’s crust, where continental plates collide, to find the answer.

Lesson by Michele Koppes, animation by Provincia Studio.