Epic Light Show Flashes Above U.S.

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Epic Light Show Flashes Above U.S.         An epic magnetic battle raged above our heads last evening. Read More WATCH VIDEO: Hubble Captures Saturn's Aurorae Saturn has northern and southern lights shimmering above its poles. Genetically Altered Astronaut Poo? NASA Wants to Know         Preserving items left behind by astronauts is critical for history and science, NASA says. Read More WATCH VIDEO: Heading Back to the Moon NASA prepares a robotic scouting party ahead of it's next trip to the moon. Population to Reach 7 Billion This Week         Even larger growth is predicted by the end of the century, reaching 15 billion by 2100. Read More WATCH VIDEO: Is a Killer Virus Out There? In the movie Contagion, panic ensues as an unknown illness threatens humanity, but could it really happen? Tsunami Debris Floating Fast Toward Hawaii         Anyone sailing in the Western Pacific is asked to keep an eye out and report debris to NOAA. Read More WATCH VIDEO: Tsunami Hits New York City A controversial theory suggests an asteroid caused the tsunami that hit New York City 2,000 years ago. Follow Discovery News on Facebook! Get your sci-tech headlines all day on Twitter too! Follow us @Discovery_News. At Discovery we value your privacy. If you would like to be removed from Discovery News emails like this, please click here to our subscription center, where you can manage your account. We recently updated our privacy policy. This policy is effective as of 10/30/07. To see new policy click here . Discovery Communications, LLC One Discovery Place Silver Spring, MD 20910 © 2010 Discovery Communications, LLC