19:27
The first 20 hours -- how to learn anything | Josh Kaufman | TEDxCSU
13:09
Welcome to the Era of Energy Disruption | Gerard Reid | TEDxBerlinSalon
17:53
How to Achieve Your Most Ambitious Goals | Stephen Duneier | TEDxTucson
22:56
How Fear of Nuclear Ends | Michael Shellenberger | TEDxCalPoly
12:12