What if we could hear nature's ultrasonic communication -- and talk back? From a bat's shrill speech to a peacock's infrasound mating call, conservation technology researcher Karen Bakker takes us through a sound bath of animal noises...

Bonnie Bassler discovered that bacteria "talk" to each other, using a chemical language that lets them coordinate defense and mount attacks. The find has stunning implications for medicine, industry -- and our understanding of ourselves.

In 1970, a recording of a whale song changed the world. The album, “Songs Of The Humpback Whale,” helped launch a movement to ban commercial whaling and protect endangered species. Today, scientists are getting closer and closer to...