In this talk by University of Minnesota College of Science and Engineering Dean and world-renowned geochemist Samuel B. Mukasa, we see demonstrations of the differences between natural cycles of climate change and the out-of-cycle changes increasingly being attributed to anthropogenic factors. Mukasa also provides examples of recent changes observed in both equatorial and polar regions. He finishes with a sober assessment of what the responsible citizen can do to minimize anthropogenic forcing of climate change.
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