Last week researchers presented evidence that invasive Asian carp species may be at the Great Lakes' doorstep. The upper Lakes may not support a carp explosion, however, and the jury is out on what their impact could be. Still, scientists urge caution.
The carp’s march up the Mississippi River basin even surmounted electric barriers set up by the Army Corps of Engineers to keep them out of Chicago waterways. A new study in the Canadian Journal of Fisheries and Aquatic Sciences affirms that if the fish haven’t reached the Great Lakes yet, they’re very close.
The sediment on the bottom of the Grand Calumet River in Northwest Indiana provides a toxic record of the region’s history going back more than a century.It is full of chemicals, heavy metals and other contaminants from steel-making, oil refining, waste incineration, smelting and other heavy i