Right off a Wyoming game trail, a black bear walks through the Bridger-Teton National Forest. A motion-sensor camera, placed there by researchers, picks up its movements and triggers the sounds of ...

The first grainy film clip shows a black bear exploding out of the trail camera’s frame. In another, a mule deer stops munching wildflowers, backs away and takes off in the opposite direction. In a ...

The sick, elderly, and young are particularly sensitive. Numerous studies have shown that excessive anthropogenic noise – ...

Twenty years ago Saturday, Ted Parker, one of the world's greatest field biologists and sound archivists, died in a plane crash. He made nearly 11,000 wildlife recordings, and could identify some ...

This past spring, I was hiking solo on a little-known trail high above Mill Valley’s Cascade Canyon. This dense, shady coastal redwood forest is just over the ridge from the famous old-growth redwood ...