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The Disaster DiariesNatural disasters claim 20,000 lives and cause more than $42 billion in damage during 2015, a year marked by tropical storms, drought and hot weather around the world.

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Now PlayingThe Disaster DiariesNatural disasters claim 20,000 lives and cause more than $42 billion in damage during 2015, a year marked by tropical storms, drought and hot weather around the world.0Asteroids: A New HorizonLearning about the properties that asteroids possess that make them essential for deep-space travel.

Cosmic Journeys Series

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Cosmic Vistas Series

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Disasters in Space

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Space: The New Frontier Series

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• Now Playing24minMercury or Bust
• Now Playing25minHyabusa 2
• Now Playing25minEyes to the Heavens
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• Now Playing25minMoon Shine
• Now Playing25minRising Tides
• Now Playing25minEarth's Evil Twin
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• Now Playing25minMountains in the Dark
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• Now Playing25minPeering Into the Abyss
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