Kgnu - How On Earth

Beringia (start time 0:55). We present an excerpt of  Shelly Schlender's  interview with University of Colorado scientist John Hoffecker, lead author of a recent paper in Science magazine about the Beringia land bridge and the people who lived there 25,000 years ago.  The full interview can be found here.   Dolphins & Climate Change (start time 4:40). Dr. Denise Herzing, the founder of the Wild Dolphin Project, has been building relationships with Atlantic Spotted Dolphins for 28 years. Her quest to learn whether dolphins have language, and to learn that language, is notable for its longevity. But her relationship with them is remarkably respectful, too. We last spoke to Dr. Herzing in the spring of 2012, about her book Dolphin Diaries: My 25 Years With Spotted Dolphins in the Bahamas. We're very glad that she's with us again, to help us learn about how large marine mammals may be responding in unusual ways to changes in the oceans. The Ogallala Road (start time 15:15).  We often hear about how the Colora