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Anderson Cooper reports the latest in the Boston bombing case, and Drew Griffin has an update on a deadly Legionnaires' outbreak at a VA hospital. Watch AC360° at 8 & 10 p.m. ET.
February 15th, 2013
11:36 PM ET
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Videos capture exploding meteor in sky

Cameras captured the sight, sound and aftermath of the tiny asteroid exploding over Russia. CNN's Jim Boulden reports.

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Filed under: Science
February 15th, 2013
11:25 PM ET
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Physicist: Over 100 tons of material falls daily

Physicist and cosmologist Lawrence Krauss explains the science behind the meteor that exploded over Russia and the asteroid that was approaching earth on Friday.

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