“The potato is a staple to ensure food security” is this year’s slogan. The 9th World Potato Congress, the biggest potato conference ever, was held in Yanqing County in northwest Beijing from July 28 to July 30, attracting more than 3,000 potato researchers and potato industry stakeholders from over 40 countries. It is the second time the WPC has been held in China since the congress began in 1993. [Photo by Zhang Yanling/ China.org.cn]