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:
Sean Carroll: Distant Time and the Hint of a Multiverse
At TEDxCaltech, cosmologist Sean Carroll attacks -- in an entertaining and thought-provoking tour through the nature of time and the universe -- a deceptively simple question: Why does time exist at all? The potential answers point to a surprising view of the nature of the universe, and our place in it.
Defying Gravity
What happens in our brain when we view an optical illusion? The information gathered by the eye is processed in the brain to create an idea or image that does not match with a physical measurement of the stimulus source.
Roderick Romero - Treehouse Builder
Roderick has been featured for his fantastic skills on Treehouse Master, and is personally responsible for many of the worlds greatest treehouses. This interview took place around January 15th, 2015.
The Power of Affirmation (The EPOD Theory)
A live, high-energy presentation performed by Dave Yoho debunks the myth that good talkers make great salespeople. It shows how managers get salespeople to talk less, listen more, understand customers better, and - sell more.
James Hansen: Why I Must Speak Out About Climate Change
Top climate scientist James Hansen tells the story of his involvement in the science of and debate over global climate change. In doing so he outlines the overwhelming evidence that change is happening and why that makes him deeply worried about the future.