Think of the nighttime grasshopper trill, the squeak of a mouse, the hooting of an owl, the bugle of a mountain-top elk. Anthrophony, or noise from human activities, usually has lower frequency sounds ...

The sun has just set over a swamp east of Santa Cruz, Calif., and Gary Kittleson is putting on a headlamp and waders. The environmental consultant is searching for red-legged frogs. Some years, he ...

CHERRY HILL, N.J. (CBSNewYork/AP) - Scientists have discovered a new frog species in southern New Jersey that makes some un-froglike sounds. The Atlantic Coast leopard frog groans and makes coughing ...