Area of Focus: Mammals

Chernobyl explosion isn’t the only source of cesium-137 in wildlife

Pack position and physical health also influenced cortisol levels

Arachnids can be an indicator of mercury pollution in bats, birds and amphibians

Researchers will test 58 species to monitor the potential for spillback to humans

More than just controlling prey numbers, predators help ecosystems function

Wildlife managers seek to recreate ancient ecosystem roles

Extirpation of bison from large parts of their former range affected more than the ecology

The new research addresses an Interior memo limiting climate considerations

A small elephant population is responsible for big problems

The wolves are 200 miles away from the nearest known pack