Researchers say the concentration of plastic waste in the European Arctic is now comparable or even higher than in more urban and populated areas.

Recent heavy snowfall and large drifts have created ideal conditions for the dens where the endangered Saimaa ringed seal raise their young, and a record number of pups may be born this year. The freshwater Saimaa ringed seal is one of the most endangered seal species in the world.

Since January 2017, elevated minke whale (Balaenoptera acutorostrata) mortalities have occurred along the Atlantic coast from Maine through South Carolina.

Washington state officials have proposed a new tack to save the Pacific Northwest's critically endangered orca population. Their idea is to boost salmon