New tech tackles soil contaminated with arsenic

For a few decades from the 1950s to the 1990s, Wenshan city in Southwest China's Yunnan province ranked first in terms of arsenic production in China.

Tao Guangfa, a 67-year-old villager, still remembers how people in his hometown used to be afraid of eating corn, rice and other crops from the fields and along a waterway around a local arsenic mine.

People even avoided herding around the arsenic mines for some time as grass for the cattle was poisoned due to soil pollution.