Phil Plait: How to Defend Earth From Asteroids
What's six miles wide and can end civilization in an instant? An asteroid - and there are lots of them out there. With humor and great visuals, Phil Plait enthralls the TEDxBoulder audience with all the ways asteroids can kill, and what we must do to avoid them.
Other Videos That May Interest You:
Frans de Waal: Moral Behavior in Animals
Empathy, cooperation, fairness and reciprocity -- caring about the well-being of others seems like a very human trait. But Frans de Waal shares some surprising videos of behavioral tests, on primates and other mammals, that show how many of these moral traits all of us share.
Dyan deNapoli: The Great Penguin Rescue
A personal story, a collective triumph: Dyan deNapoli tells the story of the world's largest volunteer animal rescue, which saved more than 40,000 penguins after an oil spill off the coast of South Africa. How does a job this big get done? Penguin by penguin by penguin ...
Jok Church: A Circle of Caring
In this 3-minute talk, cartoonist and educator Jok Church tells a moving story of the teacher who cared for him when no one else did -- and how he returned the favor.
Natalie Warne - Anonymous Extraordinaries
Born in an underserved part of downtown Chicago, Natalie and her five siblings had to survive on her mother's humble teacher salary, moving from city to city to find work. No stranger to adversity, Natalie was determined to make something great out of her life.
Tony Robbins: Why We Do What We Do, and How We Can Do It Better
Tony Robbins discusses the "invisible forces" that make us do what we do -- and high-fives Al Gore in the front row.