Mussels once numbered the millions in local rivers. Now researchers are hoping to find a type of salamander that an endangered mussel needs to survive.
The proposal looks to protect dozens of underwater shipwrecks in Lake Erie off the coast of Pennsylvania while still allowing for fishing, boating and diving.
Pitt and Duquesne University researchers found radium downstream of wastewater treatment plants that treat runoff from landfills that accept frack waste.
