Technology_Internet

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Pivotal point: A deadly crash at the Fort Totten Metro Station in June 2009 brought to light the safety issues with the transit system's 1000 Series rail cars. Officials likened the effect to a collapsing telescope.) (Associated Press)

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Metro has removed the last of its 1000 Series rail cars and 4000 Series rail cars from the tracks and replaced them with the safer 7000 Series. (Associated Press)

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Students from Team Israel dance in the hallway next to other teams including students from Iraq during the FIRST Global Robotics Challenge, Tuesday, July 18, 2017, in Washington. The challenge is an international robotics event with teams from over 100 countries. (AP Photo/Jacquelyn Martin)

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Rodaba Noori, left, Somayeh Faruqi, Kawsar Rashan, and Lida Azizi, with Team Afghanistan, encourage their robot during their final round of competition, at the FIRST Global Robotics Challenge, Tuesday, July 18, 2017, in Washington. The challenge is an international robotics event with teams from over 100 countries. (AP Photo/Jacquelyn Martin)

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Amar Naser Kabour, center, and Mohammad Mahir Ghssan Alisawaui, right, who are both Syrian refugees living in Lebanon, are helped with their robot by their mentor, Osama Shadeh, who is also a Syrian refugee, during the FIRST Global Robotics Challenge, Tuesday, July 18, 2017, in Washington. Their team is known both as Team Refugee and as Team Hope. The challenge is an international robotics event with teams from over 100 countries. (AP Photo/Jacquelyn Martin)

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Poriya Mizbani, 16, left, and Amin Dadkhah Tehrani, 15, with Team Iran, begin to pack up their station after competing in the FIRST Global Robotics Challenge, Tuesday, July 18, 2017, in Washington. The challenge is an international robotics event with teams from over 100 countries. (AP Photo/Jacquelyn Martin)

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Students from across the world, from Peru, to Russia, to Slovenia, and from across the African continent, meet during the FIRST Global Robotics Challenge, Tuesday, July 18, 2017, in Washington. The challenge is an international robotics event with teams from over 100 countries. (AP Photo/Jacquelyn Martin)

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Lida Azizi, center, picks up a teammate with Team Afghanistan in the air as they celebrate after competing in the FIRST Global Robotics Challenge, Tuesday, July 18, 2017, in Washington. The challenge is an international robotics event with teams from over 100 countries. (AP Photo/Jacquelyn Martin)

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In this June 30, 2017 photo, Kevin Bowe works in his home basement recording studio in Minneapolis, Minn. Digital technology has revolutionized the business and dramatically dropped the entry costs to produce high-quality music. And the big studios that drove so much music success here and across the country are under immense competitive pressure. (Maria Alejandra Cardona/Minnesota Public Radio via AP)

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In this June 30, 2017 photo, Steve Weise, who’s owns his own production building, poses in Minneapolis, Minn., where producers have done albums for The Jonas Brother's, Miley Cyrus, and The Rembrandts. The building has been there since 1986 and Weise works with multiple engineers. Digital technology has revolutionized the business and dramatically dropped the entry costs to produce high-quality music. And the big studios that drove so much music success here and across the country are under immense competitive pressure. (Maria Alejandra Cardona/Minnesota Public Radio via AP)

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In this June 30, 2017 photo, John Fields, an accomplished music producers who currently works alongside Steve Weise, works in a recording studio in Minneapolis. Digital technology has revolutionized the business and dramatically dropped the entry costs to produce high-quality music. And the big studios that drove so much music success here and across the country are under immense competitive pressure. (Maria Alejandra Cardona/Minnesota Public Radio via AP)

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FILE - In this Feb. 5, 2015 file photo the logo of a Mercedes car is photographed during an annual press conference of Daimler AG in Stuttgart, Germany. German automaker Daimler says Tuesday, July 18, 2017 it is voluntarily recalling 3 million diesel cars in Europe to improve their emissions performance. The Stuttgart-based company, which makes Mercedes-Benz luxury cars, says it is taking the step to reassure drivers and strengthen confidence in diesel technology. (AP Photo/Michael Probst, File)

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In this Oct. 15, 2013, file photo, Chuck Goolsbee, site director for Facebook's Prineville data centers, shows the computer servers that store users' photos and other data, at the Facebook site in Prineville, Oregon. (Andy Tullis/The Bulletin, via AP, File) **FILE**

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The Afghanistan girls team competes in the First Global Robotics Challenge, Monday, July 17, 2017, in Washington. The challenge is an international robotics event with teams from over 100 countries. (AP Photo/Jacquelyn Martin)

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This image released by Magnolia Pictures shows Edia Falco in "Landline." (Linda Kallerus/Amazon Studios via AP)

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Illustration on Trump's direct communication with the American people through his Twitter messages by Alexander Hunter/The Washington Times

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Apple unveiled a dozen new emoji characters in celebration of World Emoji Day on Monday, including a breastfeeding mother, a bearded man and a woman in a hijab. (Apple)

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In a July 13, 2017 photo provided by NASA, the payload fairing for NASA's Tracking and Data Relay Satellite, TDRS-M, is inspected prior to encapsulating the spacecraft, inside the Astrotech facility in Titusville, Fla. NASA said Monday, July 17, 2017, that one of the antennas on the Tracking and Data Relay Satellite, was damaged last Friday. The mishap could delay what was supposed to be an Aug. 3 liftoff aboard an Atlas V (five) rocket. (Glenn Benson/NASA via AP)