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Is California Prepared for the ‘Big One’?
Millions worry what a massive earthquake would do to the Golden State. Experts say a major quake along the San Andreas Fault in Southern California could kill 1,800 people, injure 53,000, destroy 1,500 buildings and damage 300,000 more.
Slow-moving hurricanes like Florence could become increasingly common04:07
Usain Bolt takes on laws of physics in zero gravity race00:56
As NASA launches historic mission to the sun, meet the man who inspired the project01:50
Stretch of Utah desert used as training ground for mission to Mars01:54
San Diego Zoo hopes to end extinction using frozen cells02:14
Why we crave the thrill of danger and surviving it02:11