Each weekday, Pulse of the Planet provides its listeners with a two-minute sound portrait of Planet Earth, tracking the rhythms of nature, culture and science worldwide and blending interviews and extraordinary natural sound.Get more info. Distributed by NIEonline.com
Caves - Diving
Scientists investigating underwater caves must brave dangerous conditions.
At NASA's Jet Propulsion Laboratory, engineers are testing a rover in a simulated sand pit, in hopes of freeing Spirit - a rover that's been stuck in a real sand pit on Mars.