Workers clear the wreckage of a July 23 high-speed-train collision in Wenzhou in eastern China's Zhejiang province. The crash killed 40 people and raised questions about the safety of the country's high-speed-rail network, which the Chinese government has held up as an example of its technological prowess and with which it had hoped to attract overseas buyers. STR/AFP/Getty Images hide caption

itoggle caption STR/AFP/Getty Images

Lemongrass stalks, when finely chopped, add a unique citrusy note to Thai cuisine. iStockphoto.com hide caption

itoggle caption iStockphoto.com

Afghan security personnel carry a wounded colleague across a street in Kabul on Sept. 14, after Taliban fighters attacked the most heavily protected part of the Afghan capital. Adm. Mike Mullen, chairman of the Joint Chiefs of Staff, said Thursday before a Senate panel that the Haqqani network of militants, supported by Pakistan, was responsible for this attack, among others. ShahMarai /AFP/Getty Images hide caption

itoggle caption ShahMarai /AFP/Getty Images

Chinese officials announced on Aug. 22 that the large city of Chaohu in eastern China no longer existed. The move caught residents by surprise. Chaohu's museum, shown here, houses a Han dynasty tomb, and the city is known for its huge freshwater lake. Louisa Lim/NPR hide caption

itoggle caption Louisa Lim/NPR

Catwalks hang over a section of the newly constructed eastern span of the San Francisco-Oakland Bay Bridge in Oakland, Calif. Justin Sullivan/Getty Images hide caption

itoggle caption Justin Sullivan/Getty Images