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New Satellite Image Shows Moore Tornado ScarDamage path appears as beige streak across the Oklahoma landscape.
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Woman Rowing Solo Across Pacific OceanPart of trip to circumnavigate Northern Hemisphere.
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Deep Arctic Waters Still Flowed During Last Ice AgeResearch shows sea ice formed and melted like it does today.
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UK Sees Coldest Spring in 50 Years
Cold weather also brought snow to France; ski resort re-opens.
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There's a Traffic Jam on Mount EverestMore climbers attempting summit, clogging paths.
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Moore Tornado Debris Would Make Mile-High PileDebris is about half that created by the EF5 that struck Joplin, Mo.
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Pres. Obama Thanks Tornado Forecasters in OklahomaObama credits forecasters with helping to warn residents in time.
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Los Angeles River Re-Opens to PublicSection of river through city opening to kayaking, fishing.
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Moore, Okla. Tornado – FAQThe basic facts and most-asked questions.
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Major Tornado Strikes Moore, Okla., Damage SevereTornado is unrated, but has caused considerable damage.
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Texas Tornado Caught on VideoThe tornado caused less damage than others in nearby towns.
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Everyone Wants to Visit AntarcticaAntarctic tourism numbers increased last year from previous season.
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UN Threatens to List Great Barrier Reef as EndangeredAgency evaluates site before World Heritage Committee meeting next month.
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Take a Trip Through the Northwest Passage on Your iPadInteractive app features stories of Arctic animals and communities.
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Surprising Somali Pirate Victim: SciencePirates keeping away ocean-drilling ships.
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Is Your Hometown a Top Tornado City?New list takes into account full area hit by tornadoes.
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Sea Ice Loss Could Alter Arctic Air ChemistrySource of key reactions found in snow atop sea ice.
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Alfred Russel Wallace's House for Sale in EnglandThe eminent naturalist has long played second fiddle to Darwin.
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Dust Plumes Photographed Over Four CornersThe plumes were whipped up in an area experiencing drought.
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New US Natural Landmarks Relics of America's PastBoth are ecosystem that used to be more widespread.
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New Research Ship Named for Astronaut Sally RideR/V Sally Ride will explore the mysteries of the ocean.
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Did Admiral Byrd Fly Over the North Pole or Not?New analysis suggests he was about 80 miles shy.
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These Are Some Strange-Looking Fish...Some have nose like Pinocchio, others looked like they bumped their head.
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NASA Satellite Spots Letter 'J' in the SkyCyclone Victoria took the shape of the letter over the Indian Ocean.
