To geochemist Greg Rau, the future looks like a seaside power plant. More specifically, it looks like a biomass combustion plant that’s actually carbon-negative because the CO2 emissions are dissolved ...

The most common process by which limestone caves form involves carbonic acid — or weakly acidic groundwater — as the primary agent. When carbonic acid contacts limestone, it dissolves minerals in the ...

Workers clean a drainage ditch in Limestone County on Tuesday after a spill of the chemical xylene. BP America Inc. shut down a leaking pipeline Monday on Alabama 99 in the Owens community, northwest ...