KEDOUGOU, Senegal (AP) — 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 ...

BOGOTA, Colombia (AP) — Peruvian customs officials have seized a record-breaking shipment of illegal mercury, exposing a cross-border smuggling network that is fueling one of the Amazon’s most ...

A small, leafy, green peanut plant grows out of a patch of dirt. When David McLagan’s team sampled mercury isotopes in cassava, maize, and peanut crops (like the one shown here) grown downwind of a ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. KEDOUGOU, Senegal (AP) — The quickest way to ...