date:Aug 26, 2013
Researchers from Switzerland and China reviewed geological maps of the country, which provided them with information about climate, land use, rivers and elevation.
With this data, the researchers found types of rocks that are present in the land where they were able to point out areas where arsenic is most likely to be found.
In order to complete a full and accurate test, however, researchers will need to test nearly 10 million drinking wells throughout China, which could take decades.
Sin