A dust storm moves across the barren plains of northern Kenya in March 2006. Viruses are swept up into the atmosphere via dust storms and ocean spray, and then fall back down to the surface.
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Quake On Bay Area Fault Could Kill Hundreds, USGS Simulation Shows
Young people take a photo in front of the Akhmad Kadyrov Mosque, known as the "Heart of Chechnya," and large letters reading "I love Grozny" in central Grozny, Russia, in 2017.
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The Greenland ice sheet, the second largest body of ice in the world which covers roughly 80 percent of the country, has been melting and its glaciers retreating at an accelerated pace in recent years due to warmer temperatures.
A tourist takes photos of Tower 101 in Taipei in 2013. Policy experts say the Taiwan Travel Act is a provocation for China because more visits to Taiwan by high-ranking U.S. officials could help boost the island's international profile.
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A vehicle of U.S. troops passes on a street in Manbij, Syria on Saturday. President Trump's unscripted public declaration this week about pulling out of Syria "very soon" while at odds with his own policy are unnerving for the Kurds in this context.
Pastor Frank Pomeroy and his wife Sherri speak during a press conference at the entrance to the First Baptist Church, after a mass shooting that killed 26 people in Sutherland Springs, Texas, last November.
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Power lines hang from a pole in a Brooklyn neighborhood on March 15 in New York City. As U.S. officials step up sanctions on Russian intelligence for its interference in the 2016 elections, members of the Trump administration have accused Russia of a cyber-assault on the domestic energy grid and other key parts of America's infrastructure.
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