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Science and Space Features
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Best of Pop Quiz 2010
Are you a Pop Quizzer? You should be. Our daily home page trivia questions are tricky for some and a breeze for others, but the surprising answers are always worth a guess. See how you fare against them.
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Space Pictures This Week
A supernova leftover glows like an opal, the sun spews hot gas, snow blankets the Midwest, and more in the week's best space pictures.
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Pictures: Giant Mars Pits Revealed
Peer inside two mysterious, debris-strewn holes that may be evidence for caves on Mars. But don't worry—no sign of space slugs yet.
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Oldest Games in Americas Found?
Indian casinos aren't exactly new to the game—people were playing dice in the New World as early as 5,000 years ago, research suggests.
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The Best of Everything in 2010
See the year's top content from Nat Geo News, magazines, channel, and more.
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Skin
It provides armor, insulation, and air conditioning. Learn more about the body's biggest organ.
Science Video
Blog: Breaking Orbit
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Comet Disaster Calculator
Scientists at Purdue University and Imperial College London have released a user-friendly version of their high-tech disaster calculator.
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Vote for Astro-Wakeup Songs
You pick the tunes, NASA will blast them into the space shuttle.
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Remembering Space Bat
As the final flight of the shuttle Discovery approaches, take a moment to remember the craft's furriest space-bound passenger.
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2010 Emerging Explorers
Science Topics
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Ancestry.com Family History
Your family tree goes back to Phoenicia. So how did your grandparents end up in Phoenix? Find out with Ancestry.com.
The Great Energy Challenge
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Quiz: Natural Gas
Find out how much you know about one of the world's fastest growing fuel sources.
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Personal Energy Meter
See how you measure up, and find out how making simple changes at home can help.
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Start an Energy Diet
These small steps could heal the planet and save you money.
National Geographic Magazine
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Population 7 Billion
The world will reach this milestone in 2011, but there's no need to panic—at least, not yet.
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Back to Life
The reefs of the Phoenix Islands are bouncing back after a a rare bleaching disaster.
Genographic
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Take a Poll
Which environmental challenge or goal is most pressing in your community? Take our poll!
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Photo Contest
See a selection of photo entries in this year's contest!
