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:
Tierney Thys Swims with the Giant Sunfish
Marine biologist Tierney Thys asks us to step into the water to visit the world of the Mola mola, or giant ocean sunfish. Basking, eating jellyfish and getting massages, this behemoth offers clues to life in the open sea.
Award-Winning Teen-Age Science in Action
In 2011 three young women swept the top prizes of the first Google Science Fair. At TEDxWomen Lauren Hodge, Shree Bose and Naomi Shah described their extraordinary projects - and their route to a passion for science.
Religion, Evolution and Self Ascendency: Why Good People are Divided by Politics and Religion
Psychologist Jonathan Haidt asks a simple, but difficult question: why do we search for self-transcendence? Why do we attempt to lose ourselves? In a tour through the science of evolution by group selection, he proposes a provocative answer.
How Great Leaders Inspire Action
Simon Sinek presents a simple but powerful model for how leaders inspire action, starting with a golden circle and the question "Why?" His examples include Apple, Martin Luther King, and the Wright brothers -- and as a counterpoint Tivo, which (until a recent court victory that tripled its stock price) appeared to be struggling.
BOATLIFT, An Amazing Tale of 9/11 Resilience
As the World Trade Center buildings burned and collapsed on September 11, 2001, a half million people were evacuated from Lower Manhattan by a civilian flotilla of ferries, tug boats and other vessels in what became the largest boatlift in history. BOATLIFT - An Untold Tale of 9/11 Resilience, is a touching tribute to that effort.