2012-03-12

[public] 1.92M views, 42.4K likes, 1.17K dislikes audio only

Veritasium

Complete unedited interviews: http://www.youtube.com/watch?v=8dcw98B2Nzg

Trees can weigh hundreds or even thousands of tons, but where do they get this mass from? A few common answers are: the soil, water, and sunlight. But the truth is the vast majority of a dry tree's mass comes from the air - it originated as carbon dioxide