Rachel Carson’s “Silent Spring” connected disappearing populations of bald eagles to the presence of the pesticide DDT in the birds’ food chain. Because bald eagles are apex predators, their dose of ...

Credit: Courtesy of Nathaniel Warner Increased levels of radium in freshwater mussels’ soft tissue “may pose health risks up the trophic food chain,” the study concludes. This pollution may ...

which are now confirmed to carry radium. Although freshwater mussels are not consumed by humans, other species higher in the food chain may serve as a bridge for contaminants to eventually affect ...