The black holes were 14 and 8 times the mass of the sun. As they spiraled together, they sent out gravitational waves. LIGO/T. Pyle hide caption

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Gravitational Waves From Colliding Black Holes Shake Scientists' Detectors Again

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Environment and Public Works Committee Chairman Sen. James Inhofe, R-Okla., speaks with Sen. Barbara Boxer, D-Calif., on Thursday before joining a bipartisan group of senators at a Capitol Hill news conference to discuss legislation to improve the federal regulation of chemicals and toxic substances. J. Scott Applewhite/AP hide caption

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In Polluted India, Negative Ion Necklaces Vow To Help You Breathe Easier

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Geophysicists announced this week that they have successfully collected key samples from the site of the asteroid strike that likely wiped out the dinosaurs. Joe Tucciarone/Science Source hide caption

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Geologists Find Clues In Crater Left By Dinosaur-Killing Asteroid

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The Large Hadron Collider uses superconducting magnets to smash sub-atomic particles together at enormous energies. CERN hide caption

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Weasel Apparently Shuts Down World's Most Powerful Particle Collider

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Stephen Hawking discusses the "Breakthrough Starshot" space exploration initiative during a news conference Tuesday at One World Observatory in New York City. Bryan Bedder/Getty Images for Breakthrough Prize Foundation hide caption

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Stephen Hawking's Plan For Interstellar Travel Has Some Earthly Obstacles

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Ambitious Project Would Use 'Starchips' To Travel To Alpha Centauri

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An undated picture provided by the official Korean Central News Agency earlier this month shows North Korean leader Kim Jong Un talking with scientists and technicians. North Korea's nuclear warhead was jokingly dubbed "the disco ball," but experts say the spherical device, while likely a model, is probably based on a real nuclear weapons design. KCNA/EPA via Corbis hide caption

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Why Analysts Aren't Laughing At These Silly North Korean Photos

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A Tokyo Electric Power Co. staffer measures the radiation level as others work on the construction of an ice wall at the Fukushima Dai-ichi plant on July 9, 2014. Kimmimasa Mayama/AFP/Getty Images hide caption

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Water, Soil And Radiation: Why Fukushima Will Take Decades To Clean Up

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