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Question Arises over Theory that Moon Resulted from Collision with Earth

By Ron Cowen of Nature magazine A chemical analysis of lunar rocks may force scientists to revise the leading theory for the Moon's formation: that the satellite was born when a Mars-sized body smacked into the infant Earth some 4.5 billion years ago. If that were the case, the Moon ought to bear the chemical signature of both Earth and its proposed 'second' parent.

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Risk of Heart Disease Underestimated, Researchers Say

Image courtesy of iStockphoto/energyy Heart disease is the leading killer in the U.S., and more than 27 million Americans currently have a cardiac condition . But what is your risk of developing heart disease at some point in your entire life? It might be a lot higher than you think, according to a new paper published online Wednesday in The New England of Medicine

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Video: Seeing through stem cells

Medical researchers may have found a way to reverse the leading cause of blindness in older people. Medical correspondent Dr.

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Why Did So Much High-Profile Junk Fall from Space Last Year?

Two well-publicized satellite falls a month apart got me wondering: Is this the new normal? After all, there is plenty of junk in orbit, and it can’t stay up there forever. And NASA, along with many other space agencies, now requires that satellites tumble back to Earth sooner rather than later once their useful lifetimes have ended so as to limit collisions in orbit

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Soda Tax Could Turn Health Profit

Sugary drinks are one of the leading culprits behind America's weight problem. Whether it's sugar-sweetened soda, sports drinks, teas or juices, we're each gulping down an average of 70,000 liquid calories each year.

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Small Spaces: A Lively SoHo Loft

By using clean lines and a simple color palette, and leaving a whole lot of open space in its small office, The Leading Edge achieved design serendipity. For its first satellite office in the United States, The Leading Edge , a boutique strategy and research firm, wanted to turn a Manhattan office space's top floor into something original

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The Fix Is In: Substantial Progress Made on Slowing Pace of Dog and Cat Euthanasia

Dear EarthTalk : Are as many cats and dogs being euthanized these days as back in the 1970s and 1980s when indiscriminate breeding led to explosions in pet populations? -- Mary H., Knoxville, Tenn. The Humane Society of the United States (HSUS), the leading non-profit devoted to animal welfare, reports that in the 1970s American shelters euthanized between 12 and 20 million cats and dogs every year at a time when there were 67 million pets in U.S

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Amateur Lewis wins silver medal at British Open

SANDWICH, England (AP) -Tom Lewis of England finished as the leading amateur in the British Open on Sunday, capturing the silver medal and completing a memorable week at Royal St. George's.

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Saving Nature by Ending It: Geoengineering and the Moral Case for Conservation [Video]

Climate change is a foregone conclusion. The amount of carbon dioxide already in the atmosphere from two centuries-worth of fossil fuel burning (and, apparently, with decades more worth to come, given the glacial pace of efforts to slow said emissions) is enough to substantially warm global average temperatures

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Addiction Centers Should Think Twice Before Banning Smoking

It’s not news that tobacco’s bad for your health--nearly half a million Americans die from tobacco-related illnesses every year. And among people who abuse drugs and alcohol, more than three-quarters use tobacco, which means tobacco is still the leading killer of the drug-dependent, not hard drugs. [More]

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Art: Masterpiece Theatre

When the Grosvenor House Art & Antiques Fair—the leading British show of its kind—abruptly folded in 2009 after 75 years, speculation began almost instantly about what might fill the void. Would one of the competing fairs held in London in June lure its audience, or would something new emerge in ...

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The Evolution of Time

John Simonian, owner of the Los Angeles–based watch retailer Westime, has written his first book, titled Timepiece Machines. In 300 pages and 200 photographs, it examines every aspect of the watch industry—from the basic mechanics of watchmaking to its influence on machines throughout history—and the book also spotlights the leading ...

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