No one really knows what a tree is

Name: No one really knows what a tree is
Duration: 5 min 36 s
Channel: Max G. Levy

Max G. Levy · TED

Credits and licence

From: No one really knows what a tree is, TED (at TED)
Licence: CC BY-NC-ND 4.0, as TED states it. Non-commercial use only, and no changed versions.
Attribution: TED Talks are licensed by TED under Creative Commons BY-NC-ND 4.0 International and are shown here in TED's own player, as TED's usage policy asks.
Who can watch: Tweens profiles and older. How courses are placed