Don Bogard, radio-geochemistry, nuclear geochemistry, planetary science: Most people express concern about melting polar ice sheets. But, it is the global warming, ongoing for over 200 years, that is the main culprit. And much of such warming earlier on was not caused by CO2, and that warming may still be present. If 3.1 mm/yr rise were to continue to year 2050, it would add another ~4 inches to sea rise. Most sea shores have much more to worry about from tides and waves.
