U.S. Steel mines iron ore in Minnesota and sends it across Lake Superior on freighters a thousand feet long. At Sault Ste.
A new study in Chile shows how small differences in rock type can drive large differences in erosion, vegetation, and river networks, illuminating the role of mineralogy in shaping landscapes.
A river is running red in Argentina and stumping officials as to why. Residents started sharing images of the discolored water on social media last week.
Residents along the Sarandí stream near Villa Inflamable in Buenos Aires are stunned by the blood-red color of the water.