This Saturday, April 14th, environmental groups around the country are taking part in a 'National Day of Climate Action" -- a series of rallies and educational efforts aimed at spurring Congressional action on the topic of climate change. In this hour, Ira talks with guests about getting the message about greenhouse gas emissions across, and looks at steps that individuals can take to reduce their personal carbon footprints.

Plus, we'll get a new look at some old bone. Researchers report this week in the journal Science that they've been able to sequence some remnants of collagen proteins extracted from a fossil Tyrannosaurus rex bone. We'll talk about the efforts, and what they could teach researchers about dinosaurs and their more modern relatives.Call in with your questions and comments at 1-800-989-8255 (2-3 Eastern). Teachers, find more information about using Science Friday as a classroom resource in the Kids' Connection.

Guests:
Mary Higby Schweitzer
Assistant Professor, Marine, Earth and Atmospheric Sciences
North Carolina State University
North Carolina Museum of Natural Sciences
Raleigh, North Carolina

John Asara
Instructor, Department of Pathology
Harvard Medical School
Director, Mass Spectrometry Core Facility
Beth Israel Deaconess Medical Center
Boston, Massachusetts

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Bill McKibben
Author, "Deep Economy: The Wealth of Communities and the Durable Future" (Henry Holt and Co., 2007); "The End of Nature," (Anchor, 1997)
Founder, Step It Up 2007
Burlington, Vermont

Chris Goodall
Chair, Dynmark International
Author, "How to Live a Low-Carbon Life: The Individual's Guide to Stopping Climate Change" (Earthscan, 2007)
Oxford, United Kingdom

Govindasamy Bala
Climate Scientist
Lawrence Livermore National Laboratory
Livermore, California

Books/Articles Discussed:

"How to Live a Low-Carbon Life: The Individual's Guide to Stopping Climate Change" by Chris Goodall. Earthscan, 2007.

"Deep Economy: The Wealth of Communities and the Durable Future" by Bill McKibben. Henry Holt, 2007.

"The End of Nature," by Bill McKibben. Anchor, 1997.

"Combined climate and carbon-cycle effects of large-scale deforestation," Proc. Natl. Acad. Sci. USA, 10.1073/pnas.0608998104

(find books discussed on previous broadcasts)

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This segment produced by Karin Vergoth