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.
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Global Warming - Can We Risk It?
A new way to think about the climate change debate, with over 13 million total views on various postings.
Lucianne Walkowicz: Look Up For a Change
Lucianne Walkowicz explains the importance of preserving our dark night sky from the perils of light pollution and other lesser-known factors.
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 ...
Caroline Casey: Looking Past Limits
Activist Caroline Casey tells the story of her extraordinary life, starting with a revelation (no spoilers). In a talk that challenges perceptions, Casey asks us all to move beyond the limits we may think we have.
Marina Marchese - Beekeeper
There are many health benefits when it comes to local honey. Honey Sommelier and Beekeeper Marina Marchese from Red Bee Honey in Weston explains how honey is made.