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Many physicists believe that entanglement is the essence of quantum weirdness — and some now suspect that it may also be the essence of space-time geometry.

Many physicists believe that entanglement is the essence of quantum weirdness — and some now suspect that it may also be the essence of space-time geometry.

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Madain Saleh, Saudi Arabia Dating back to the second century BC, the Nabataean archaeological site, also known as Madain Saleh, has long been hidden from foreign visitors in this ultra-conservative kingdom that rarely opens up to tourists. But now the largest and best preserved site of the Nabataean civilisation south of Petra in Jordan is the first Saudi archaeological site to be inscribed on UNESCO’s World Heritage List Archaeology in the News | The ASOR Blog

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First pictures from inside the 'crater at the end of the world' - upper crater wall. The first scientists have just returned from the crater on the Yamal Peninsula of Russia and are now using satellite photos to fix when it formed. The crater is from 50 to 70 meters deep and about 30 meters in diameter - though somewhat oval.

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The history of British slave ownership has been buried: now its scale can be revealed

The history of British slave ownership has been buried: now its scale can be revealed | World news | The Guardian

Stunning photos show TEN-STORY tree house that makes Swiss Family Robinson looks like amateurs (and the builder says it was commissioned by God)

The world's tallest treehouse, located in Crossville, Tennessee, makes the Swiss Family Robinsons look like a bunch of amateurs

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Tips on buying Walt Disney World Tickets! http://mousehints.com/how-to-buy-walt-disney-world-tickets

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'World News Now's' Diana Perez: 'It took a little while to find our groove'

"We have some very, very loyal fans," says Diana Perez of "ABC World News Now," "and they're not afraid to let us know when we say something they're not a fan of or show video they're not a fan of."

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Berlin Wall: Then and Now Berlin Wall around Brandenburg Gate in November, 1961, and (below) traffic at the same area in October, 2014. -

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San Francisco, then and now

Guardian photographer David Levene travelled across the San Francisco Bay Area photographing the sites that transformed one of the great cities of the world

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E.M. Tharp and World Ag Expo "We Believe in Growing" Scholarship Applications Now Available