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Reign Check: Abundant Rainfall May Have Spurred Expansion of Genghis Khan’s Empire

The Mongol hordes led by Genghis Khan carved out the largest contiguous land empire history has ever witnessed, reaching at its apex from Asia's Pacific coast to eastern Europe and down into Persia and southeastern Asia. Although conventional wisdom suggests drought may have pushed them across the steppe to conquer more bountiful lands, ancient, long-dead trees discovered in a forbidding lava field in Mongolia give evidence that unprecedented rains might actually have helped fuel their expansion. [More]

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Where Should You Expand Next?

A retailer expanding its locations holds lessons for any growth-oriented company. In our previous article, The Secret to Retail Store Profitability , we discussed a retailer client that was unsure whether to expand or close its three-store chain of French clothing boutiques.

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Growth of the Alberta tar sands from 1984 to 2011

NASA has posted a series of satellite photos documenting the expansion of the Athabasca tar sands. The Athabasca pits cover over 54,000 square miles in Alberta with an estimated reserve of 1.75 trillion barrels of oil – good enough for third in the world behind Saudi Arabia (1) and Venezuela (2).

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Discovery of Accelerating Universe Wins 2011 Nobel Prize in Physics

The 2011 Nobel Prize in physics was awarded today to Saul Perlmutter at the Lawrence Berkeley National Lab, Brian Schmidt at the Australian National Lab and Adam Reiss at Johns Hopkins University for their discovery of the accelerating expansion of the universe. “In a universe which is dominated by matter, one would expect gravity eventually should make the expansion slow down, the Royal Swedish Academy’s Olga Botner said this morning at the announcement event in Stockholm

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2011 Nobel Prize in Physics

The 2011 Nobel Prize in Physics goes to Saul Perlmutter at the Lawrence Berkeley National Lab, Brian Schmidt at the Australian National Lab and Adam Reiss at Johns Hopkins. The Royal Swedish Academy’s Olga Botner: “In a universe which is dominated by matter, one would expect gravity eventually should make the expansion slow down.

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Scientists model physics of a key dark-energy probe

Ohio State University researchers are leveraging powerful supercomputers to investigate one of the key observational probes of "dark energy," the mysterious energy form that is causing the expansion of the universe to accelerate over time.

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Ancestry.com Leads The Race To Digitize Your Family Roots

GENEALOGISTS call it an "aha" moment: You unearth a meaningful family detail -- your great-grandma taught kindergarten and raised beagles or your great-great-great-grandpappy was the youngest of 12 brothers and sisters -- and you're hooked.

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Antigravity could replace dark energy as cause of Universe’s expansion

Since the late 20th century, astronomers have been aware of data that suggest the universe is not only expanding, but expanding at an accelerating rate. According to the currently accepted model, this accelerated expansion is due to dark energy, a mysterious repulsive force that makes up about 73% of the energy density of the universe.

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