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 Colorado River is running dry. The Western states that rely on its flowing water are struggling to reckon with how its depleting reservoirs will satiate growing populations. You’ve probably seen images of the white “bathrub rings” at Lake Powell and Lake Mead that expose the water line rings of years ago. But there’s an equally dramatic and dangerous drop in an invisible source of water. That’s the Ogallala Aquifer – an underground basin of groundwater that spans eight states on the High Plains, including Colorado. Nearly one third of irrigated cropland in the country stretches over the aquifer. And the Ogallala yields about a third of the ground water that’s used for irrigation in the U.S. The story of the Ogallala’s depletion is a very personal one for author Julene Bair. She lives in Longmont, but years ago she learned that the family farm in Kansas that she inherited had been a big part of the problem. Julene has written about her journey, including her desire to make the farm part of the solution. Julene joins us on the show to talk about her new book The Ogallala Road: A Memoir of Love and Reckoning.
Hosts: Jim Pullen, Susan Moran
Producer: Joel Parker
Engineer: Joel Parker
Executive Producer: Jim Pullen
Additional contributions: Shelley Schlender
Listen to the show:
Podcast: Play in new window | Download (Duration: 23:47 — 21.8MB)
Haven for Captive Wolves (start time 14:25)
Welcome to a special 
Amazon CO2 (start time 04:37) The Amazon basin contains the largest tropical rainforest on the planet. It’s been critical not only for its beauty and biodiversity but also for its ability to store more carbon dioxide than it emits. The soil and above-ground biomass of the Amazon makes it one of the largest reservoirs of carbon dioxide. And that has helped to keep climate change from accelerating even faster. But a new 
Power Plant Smokestacks (start time 14:43) To understand the global greenhouse gas budgets, it’s critical to characterize their sources and sinks. Electrical power generation accounts for about a 
Bonobo Conservation Success: (start time: 16:11) Author 
Strontium Clock (start time 14:10) We’ve got a full-house of physicists in the studio today to help us understand the new 
Quitting smoking (start time 4:39) 50 years ago, the U.S. Surgeon General began a 
For our first show in 2014 we offer two feature interviews:
Feature #2: In expectation of the first official cargo flight of the 
