China's arsenic contamination risk is assessed

Nearly 20 million people in China could be exposed to water contaminated with arsenic, a study suggests. Scientists used information about the geology of the country to predict the areas most likely to be affected by the poison. via Pocket http://www.bbc.co.uk/news/science-environment-23794644#sa-ns_mchannel=rss&ns_source=PublicRSS20-sa