KEDOUGOU – The quickest way to separate gold from rock, Sadio Camara says, is with a drop of mercury. She empties a dime-sized packet of the silvery liquid into a plastic bucket of muddy sediment ...

For hundreds of years, the Amazon has been exploited for its gold. Today, the precious metal is just as sought after, but the remaining tiny gold particles are much harder to find. Mining often ...

Shannon Plunkett, a civil and environmental engineering doctoral student at Duke, won an award this summer for “Best Student Presentation” at the International Conference for Mercury as a Global ...