Kevin Allocca is YouTube’s trends manager, and he has deep thoughts about silly web video. In this talk from TEDYouth, he shares the 4 reasons a video goes viral. (This is the first talk posted from an amazing TEDYouth event. Many others will come on line next month as part of our TED-Ed launch. We can’t wait …)
How Do Wind Turbines Work?
Explore how wind turbines convert wind into electricity, and the challenges of powering the world entirely with wind energy.