Rescue crews work on the wreckage of TransAsia Airways Flight GE222, which crashed while attempting to land in stormy weather on the Taiwanese island of Penghu, late Wednesday. Wong Yao-wen/AP hide caption

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What treasures lie buried here? Three climbers traversed part of the Mont Blanc massif earlier this month. Jean-Pierre Clatot /AFP/Getty Images hide caption

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Police and emergency personnel stand near the remains of a fixed-wing aircraft that was engulfed in flames Sunday at the Soldotna Airport in Alaska. Rashah McChesney/Peninsula Clarion hide caption

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Asiana Flight 214, a Boeing 777 aircraft, after Saturday's crash at San Francisco International Airport. NTSB/Contra Costa Times/MCT/Landov hide caption

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This aerial photo shows the wreckage of the Asiana Flight 214 airplane after it crashed at the San Francisco International Airport on Saturday. Marcio Jose Sanchez/AP hide caption

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A dashcam video purports to show the crash of a civilian cargo 747 in Afghanistan Monday. LiveLeak hide caption

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A picture taken with a photo camera shows residents of the Iju district of Lagos, Nigeria, gathering at the site where a Dana Air jet crashed into a neighborhood on Sunday. AFP/Getty Images hide caption

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