Stewart Brand: The dawn of de-extinction. Are you ready?
Throughout humankind's history, we've driven species after species extinct: the passenger pigeon, the Eastern mountain lion, the dodo .... But now, says Stewart Brand, we have the technology (and the biology) to bring back species that humanity wiped out. So -- should we? Which ones? He asks a big question whose answer is closer than you may think.
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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.
Matthieu Ricard: The Habits of Happiness
What is happiness, and how can we all get some? In this video, Buddhist monk Matthieu Ricard discusses the habits of happiness.
Ultimate Dog Tease
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The Power of Introverts
In a culture where being social and outgoing are prized above all else, it can be difficult, even shameful, to be an introvert. But, as Susan Cain argues in this passionate talk, introverts bring extraordinary talents and abilities to the world, and should be encouraged and celebrated.