planet killer asteroid
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Mars Asteroid Strike: Ancient 'Planet Killer' Space Rock Causes Mega Tsunami on the Red Planet 3.4 Billion Years Ago
The planet killer asteroid that struck Mars 3.4 billion years ago also proves long-held notions that the Red Planet once held vast amounts of ocean water.
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U.S Severe Weather Threats: Isolated Tornadoes, Hail to Continue This Week; Dangerous Travel Possible
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Climate Change is Reducing Dust Levels Worldwide as Arctic Temperature Warms [Study]
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Emperor Penguins Face Harsh Reality as Ice Melt Leads to Record Chick Mortality
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Shrinking Ozone Holes in Antarctica Threatens Breeding Season of Seals, Penguins Due to UV Exposure
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![Tsunami Hazard Zones: New US Map Shows Places at Risk of Flooding and Tsunamis Amid Rising Sea Levels [NOAA]](https://1471793142.rsc.cdn77.org/data/thumbs/full/70325/280/157/50/40/tsunami-hazard-zones-new-us-map-shows-places-at-risk-of-flooding-and-tsunamis-amid-rising-sea-levels-noaa.jpg)
Tsunami Hazard Zones: New US Map Shows Places at Risk of Flooding and Tsunamis Amid Rising Sea Levels [NOAA]
