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Horne’s 64 leads Wales Open; McDowell 3 back

South African journeyman Keith Horne led the Wales Open after shooting a 7-under 64 in the opening round Thursday, with defending champion Graeme McDowell trailing by three strokes at Celtic Manor.

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World Science Festival: The Dark Side of the Universe [Live Stream]

For all we understand about the universe, 96 percent of what’s out there still has scientists in the dark. Astronomical observations have established that familiar matter--atoms--accounts for only 4 percent of the weight of the cosmos.

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iNaturalist.org Global Amphibian Blitz

Citizen scientists observe and record data to census the world's shrinking amphibian population in the name of science and conservation [More]

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Multiple Mutations May Be Common

In a point mutation, a single letter of the genetic code changes to another letter. When a protein gets made from that new code, it’ll be slightly different from usual. But new research finds that it may be fairly common for multiple mutations to happen in DNA simultaneously

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Video: Birth control pills and blood clots

"Early Show" medical contributor Dr. Jennifer Ashton reports on the tragic death of a young woman that died of a massive blood clot in her lungs that her mother believes was caused by birth control pills

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International Panel Calls for Tougher "Stress Tests" of Nuclear Power Safety Systems

A group of nuclear power experts and former regulators from 11 nations, responding to Japan's nuclear disaster, is calling for "stress tests" on the world's reactors to determine their ability to withstand extreme earthquakes, flooding or other natural disasters that strike singly or in combination.

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China’s Real Estate Bubble Is Making Your Cell Phone Obsolete–And Valuable

In the latest installment of Butterfly Effect, we follow the impact of China's bulging real estate market on commodities such as copper, the latest tech innovations those commodities enable, the scrap they create, and the subsequent recycling opportunities--in China. 1.

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10 Top Illusions (preview)

A Japanese miner climbs onto the stage, his helmet light bobbing and a pickax slung over his shoulder.

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NeighborGoods Aims To Be A Prettier, More Social, Community-Generating Craigslist

A social network for renting and borrowing aims to bring the concept of "sharing" back into the real world. NeighborGoods , the SXSW Accelerator winner for Best Bootstrapped Startup, wants to revitalize neighborly sharing by offering communities a brilliantly practical incentive to interact: everyone else's unused stuff.

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A Paper-Thin Illusion: Make Your Own Magnetlike Slopes [Slide Show]

With a few supplies and some careful cutting and pasting, you can build the gravity-defying structure that won the 2010 Best Illusion of the Year Contest . Created by Japanese mathematical engineer Kokichi Sugihara, the magnetlike slopes illusion is cleverly designed to make marbles roll "uphill." It's a trick of perspective: The slopes actually tilt downward, but they are supported by leaning columns that look straight when viewed from a specific vantage point. Sugihara discovered the illusion accidentally while feeding 3-D line drawings of "impossible" objects into a computer program designed to interpret them as solid structures

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