A corn purchaser writes on his account in northwest China in 2012. In November 2013, officials began rejecting imports of U.S. corn when they detected traces of a new gene not yet approved in China. Peng Zhaozhi/Xinhua/Landov hide caption

itoggle caption Peng Zhaozhi/Xinhua/Landov

Passengers packed the waiting hall Tuesday at Hongqiao Railway Station, which services a terminal at Shanghai Hongqiao International Airport. Johannes Eisele/AFP/Getty Images hide caption

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Usman (right), 7 months, and Abdullah (left), 18 months, are held by their mothers while they wait to receive the polio vaccine at the Jalozai refugee camp near Peshawar, Pakistan. Daniel Berehulak/Getty Images hide caption

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During nationwide polio campaigns, hundreds of thousands of health workers go door to door, giving children two drops of the polio vaccine. Anadolu Agency/Getty Images hide caption

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Zhou Yongkang, who at the time was Chinese Communist Party Politburo Standing Committee member in charge of security, attends a plenary session of the National People's Congress at the Great Hall of the People in Beijing, China in 2012. Ng Han Guan/AP hide caption

itoggle caption Ng Han Guan/AP

A health worker gives a child the polio vaccine in Bannu, Pakistan, June 25. More than a quarter-million children in Taliban-controlled areas are likely to miss their immunizations. A. Majeed/AFP/Getty Images hide caption

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A U.S. company that supplies meat to some fast-food chains in China has pulled all of its products, some of which were chicken nuggets sold in Hong Kong, made by a Chinese subsidiary. Kin Cheung/AP hide caption

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Filipino Clemente Sentino Jr (L), 45 and Dailin Cabigayan (R), 27 holds their 6 lbs newborn baby girl marking the "100 million population of the Philippines." Ritchie B. Tongo/EPA/Landov hide caption

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China Central Television anchor Rui Chenggang is the latest high-profile person to be arrested in China's massive anti-corruption drive. Michel Euler/AP hide caption

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At Yume Wo Katare, eating ramen is treated as a path to personal fulfillment. Andrea Shea for WBUR hide caption

itoggle caption Andrea Shea for WBUR

Australian Prime Minister Tony Abbott speaks during a news conference in Sydney last week. Abbott has announced the deployment of 190 police to help secure the MH17 wreckage site, where 37 Australians were killed. Rob Griffith/AP hide caption

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