Are polar bears changing their diet?

May 11, 2016

Deep in the Western Hudson Bay, populations of bearded seals are declining. As polar bears prey on these seals, researchers wonder how similar changes in prey ...

City Ants Love Fast Food

April 10, 2015

Some ants have a craving for hamburgers with a side of fries, according to a recent study. Researchers from North Carolina State University tested isotope levels in ...