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Transcript
2015 with Bassam Z. Shakhashiri Professor of Chemistry William T. Evjue Distinguished Chair for the Wisconsin Idea Director, Wisconsin Initiative for Science Literacy Department of Chemistry University of Wisconsin-Madison www.scifun.org [email protected] The Strongest Forces in Society Religion Science Grand Challenges to Society and to Scientists Help sustain Earth and its people in the face of: • • • • • • • • Population Growth Finite Resources Malnutrition Spreading Disease Deadly Violence War Climate Change Denial of Basic Human Rights, especially the right to benefit from scientific and technological progress 2015 Science of Climate Change Bassam Z. Shakhashiri Our planet has changed and continues to do so. It’s gotten warmer locally. Our planet has changed and continues to do so. It’s gotten warmer locally and globally. Our planet has changed and continues to do so. Winters have gotten milder. Our planet has changed and continues to do so. Ice has melted. Grinnell Glacier, Glacier Nat’l Park 1940 2006 Our planet has changed and continues to do so. Human activities change the composition of the atmosphere. ACS Climate Science Toolkit Tools to better understand and communicate climate science www.acs.org/climatescience ACS Climate Science Toolkit • To absorb IR energy, molecular vibrations must change the dipole moment of the molecule. • All molecules with three or more atoms meet this criterion and are IR absorbers. • The trace gases in Earth’s atmosphere contain many species that absorb and re-emit IR. Water H20 Carbon Dioxide C02 Methane CH4 Nitrous Oxide N2O ACS Climate Science Toolkit Which gas is responsible for the largest fraction of the Earth’s atmospheric greenhouse warming effect? A. B. C. D. methane ozone water vapor carbon dioxide www.scifun.org [email protected] Taking Care of Your Heart: Chemistry and Heart Disease Patrick McBride, MD, MPH Professor UW School of Medicine & Public Health
