Researchers at Penn State University say that if fracturing and erosion at the surface, and thus oxidation, occur slowly, acid mine drainage can be avoided.
Three species of black coral have been discovered on the seabed of the northern Pacific Ocean, an area where several countries have contracts to explore for metals including cobalt and nickel.
Mining companies sifting northern Chile’s Atacama Desert for copper, lithium, and other minerals are increasingly finding water is their most precious resource.