Ideas worth spreading

TEDxBoulder 2011

September 2011

|2.4M views

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 shows us all the ways asteroids can kill us (yipes), and what we must do to avoid them.

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This talk was presented to a local audience at TEDxBoulder 2011, an independent event. TED's editors chose to feature it for you.

Read more about TEDx.

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 shows us all the ways asteroids can kill us (yipes), and what we must do to avoid them.

This talk was presented to a local audience at TEDxBoulder 2011, an independent event. TED's editors chose to feature it for you.

Read more about TEDx.

About the speaker

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Phil Plait has spent his life evangelizing science, getting the word out about the real world and how we know what we know about it.

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