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Centuries Before China's 'Great Wall,' There Was Another

Archaeologists are now mapping a wall in eastern China that is as much as 15 feet tall in some places, and predates the more famous barrier by 300 years. Hundreds of miles long, it was likely erected to keep neighboring Chinese dynasties from invading each other, historians say.
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The Hunt For Meteorites Begins In Antarctica

Each winter, a team of scientists sets out on a search for those rare shooting stars that make it to the ground instead of burning up in the sky. There aren't many better places to look for these space rocks than Antarctica, often in areas where no human has set foot before.
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Stretch Or Splat? How A Black Hole Kills You Matters ... A Lot

Over the past year, a roaring debate has erupted among physicists about what exactly would happen if you fell into a black hole. Would it be "spaghettification," or a quantum firestorm and oblivion where space ceases to exist? The answer has big implications for fundamental physics.
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Time Is Running Out To Save Florida's Oranges

Scientists and growers are in a bitter fight against citrus greening, a disease that has devastated Florida's orange and grapefruit crops. They fear that unless scientists find a cure for greening soon, it's just a matter of time before economic realities and the disease force growers out of business.
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To Make Intersections Smarter, We Need Cars To Be Smarter, Too

Anyone who has waited endlessly at a red light at an empty four-way intersection knows traffic signals are not the most efficient way to keep traffic flowing. Computer scientists have figured out a way to utilize the space in intersections far more efficiently. The problem is the solution will have to wait for a day when cars can drive themselves.
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After Major Comeback, Is The Gray Wolf Still Endangered?

The U.S. Fish and Wildlife Service is proposing to take the gray wolf off the endangered species list. The wolf had been extirpated from the West and had dwindled most other places in the U.S. The great canine has rebounded since it was reintroduced to the northern Rockies in the 1990s and is continuing to spread into the Pacific Northwest. But biologists warn that if these wolves loses federal protection, they will not be able to return to some places, such as Colorado, where the ecosystem sorely needs them.
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PHOTO: Saturn's Holiday Closeup

NASA's Cassini spacecraft focused on one of the planet's poles, and produced an image that resembles a hand-painted Christmas ornament. There's also a new photo of Saturn's largest moons that makes it appear they're stacked on top of each other.
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2013 Was The Year Bills To Criminalize Animal Cruelty Videos Failed

This year, 15 bills in 11 states attempted to make undercover videos on farms illegal. Not a single one passed. Activists say a broad-based coalition that tapped the grass-roots concern for animal welfare helped defeat the measures.
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VIDEO: Rescuers Are Drawing Near To Ship Stuck In Antarctic

A Russian ship carrying an Australian scientific expedition has been trapped since Monday. But a Chinese icebreaker is expected to soon free it from the ice. Other ships are also on the way. The 74 people aboard the MV Akademik Shokalskiy plan to then continue their expedition.
NPR

Can A Fruit Fly Help Explain Autism?

Scientists hope to solve mysteries of the human brain by studying much simpler neural networks — like the brain circuits of fruit flies and mice. Already such research is turning up clues to why many people with autism are easily overwhelmed by bright lights and loud sound.

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