Watch the YouTube video - Predators, with Bill Ripple.

Watch the Bio Bulletin video entitled "Yosemite: Biodiversity in the balance?" from the American Museum of Natural History (YouTube).

View the NATURE documentary In the Valley of the Wolves which premiered November, 2007 on PBS.

Watch the Bio Bulletin video entitled "Wolves Help Aspen Trees Grow" from the American Museum of Natural History (YouTube).

Audio

Rhinos And Other Large Herbivores At Risk Of Extinction - interview with Bill Ripple on NPR's Here and Now.

View the powerpoint with audio from Bill Ripple's presentation, Using Large Carnivores for Restoring Western Ecosystems, at Utah State University.

Listen to Mess O' Predators, a segment from The Discovery Files which features new advances in science and engineering sponsored by the National Science Foundation.

Listen to Dr. Ripple's interview with the BBC on the positive impact of wolves upon the ecosystem of Yellowstone Park (mp3/3MB)

Predators and Plants, Science Update, April 2012 (mp3)

Large Predators and Ecological Health, WAMC Northeast Public Radio August 23.