There's a global sand crisis and no one is talking about it | Vince Beiser | TEDxPenn
15:33
Let's talk about sand: Denis Delestrac at TEDxBarcelona
17:18
The Amazing Way Bicycles Change You| Anthony Desnick | TEDxZumbroRiver
16:19
Why chasing happiness is nuts: What to do instead | Lenorë Lambert | TEDxBillings
18:19
How to travel the world with almost no money | Tomislav Perko | TEDxTUHH
16:06
The future of AI, work, and human potential | Lars Thomsen | TEDxHWZ
17:33
Why renewables can’t save the planet | Michael Shellenberger | TEDxDanubia
13:03
Vipassana Meditation and Body Sensation: Eilona Ariel at TEDxJaffa 2013
25:58