USGS CoreCast
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More accurate predictions of future climate and improved understanding of today’s warming are possible with new data from the first comprehensive reconstruction of an extreme warm period. Past warm periods provide real data on climate change and are natural laboratories for understanding the global climate system. USGS scientists Harry Dowsett and Marci Robinson discuss this research and implications. (7:08) | Transcript/Links | Download directly (6.62 MB) (right-click to save) |
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Long-standing farming practices in California's Sacramento-San Joaquin River Delta expose fragile peat soils to wind, rain and cultivation, emit carbon dioxide (CO2) and cause land subsidence. To capture or contain the carbon, farmers would "grow" wetlands. In doing so, they would begin to rebuild the Delta's unique peat soils, take CO2 out of the atmosphere, ease pressure on the Delta's aging levees, and infuse the region with new economic potential. We learn more from USGS bio-geochemist Robin Miller about how this could help California, the nation, and the world. (8:34) | Transcript/Links | Download directly (7.92 MB) (right-click to save) |
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The USGS and the Coast Salish Tribal Nation have partnered during the annual Tribal Canoe Journey to study and help improve resources of the Salish Sea. This final episode in the Corecast Tribal Journey gives an overview of the journey, including a look at preliminary results and additional short video clips and commentary as they paddle through the San Juan Islands and British Columbia (in the Transcript section). Play Video: (downloading may take some time due to file sizes) (6:41) | Transcript/Links | Download directly (42.95 MB) (right-click to save) |
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In the second part of our two-part drought mini-series, we head down South to talk with USGS scientists Curtis Weaver and Brian McCallum about the drought situation in the Southeastern United States. We also learn some eye-opening economic implications of drought. (Did you know that it's possibly the most expensive natural hazard to address?) (18:06) | Transcript/Links | Download directly (16.65 MB) (right-click to save) |
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In the first part of our two-part series on drought, we sit down with USGS scientists Julio Betancourt and Greg McCabe to talk about drought in the Western United States, along with some other interesting and surprising drought info. (For example, did you know that drought in the West and hurricanes in the Atlantic might be connected?) Tomorrow we'll bring you part two of this series, in which we'll talk with a couple USGS scientists about drought in the Southeast, so stay tuned. (19:05) | Transcript/Links | Download directly (17.56 MB) (right-click to save) |
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Sea ice, which is constantly thickening and thinning, plays an important role in the Earth's climate system. We sit down with USGS scientist Dave Douglas to discuss a newly developed modeling approach to estimate sea ice thickness—this is the only model based entirely on historic observations, and it was developed by scientists from the USGS and the Russian Academy of Sciences in Moscow. (5:54) | Transcript/Links | Download directly (5.48 MB) (right-click to save) |
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Three scientists talk about lesser-known topics that were brought to light in the media in 2007 by the USGS Science Picks, including the loss of coastal wetlands, leaping carp, and evolutionary teamwork. We also preview CoreFacts, the quick science Q & A we'll offer every weekday starting February 4th. Subscribe at www.usgs.gov.podcasts. (16:29) | Transcript/Links | Download directly (15.17 MB) (right-click to save) |
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In our second Earth Science Week installment, we talk with scientist Richie Williams about the USGS's amazing new satellite imagery of Antarctica as well as what's going on with ice on the southernmost continent. (4:34) | Transcript/Links | Download directly (4.27 MB) (right-click to save) |
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We welcome you to our Earth Science Week extravaganza (a podcast every day from Monday to Friday!), and then we sit down with Tom Armstrong to talk about the intriguing past and uncertain future of the Northwest Passage. (10:46) | Transcript/Links | Download directly (9.94 MB) (right-click to save) |
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How important is the link between polar bears and sea ice? USGS Associate Director for Biology Sue Haseltine talks about it, along with some other aspects of the USGS's recent polar bear research. (14:39) | Transcript/Links | Download directly (13.49 MB) (right-click to save) |
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