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:
Daniel Goldstein: The Battle Between Your Present and Future Self
Every day, we make decisions that have good or bad consequences for our future selves. (Can I skip flossing just this one time?) Daniel Goldstein makes tools that help us imagine ourselves over time, so that we make smart choices for Future Us.
Stewart Brand: The dawn of de-extinction. Are you ready?
This video is Stewart Brand's Ted lecture on the scientific challenges and moral issues surrounding the resurrection of extinct species.
The Remarkable Story of Ernestine Shepherd
Do healthy, ripped bodies only belong to the young? Not if you're Ernestine Shepherd. At 77, she's the world's oldest female bodybuilder and in our original documentary short, we follow a day in her life.
Living Goddess - Zeffi Kefala
Zeffi Kefala is a native Greek who has been living in the U.S. for the past twenty-four years. At the age of nine, she was able to read cards for her mother's friends and things would occur that she predicted - but for her at the time it was all in fun. Her life would take many turns before coming back to her gifts.
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.