Jul 07, 2013
Re: What is your basis that global warming is not caused by mankind? A: For tens of thousands of years the global temps have fluctuated. Colder...warmer, etc. Man's pop. increased over this same time period. In 12 months Chicago can go from -5F to 105F. No one dies as a result. The simple tilting of the earth causes this. So exactly why is a + 1.3F shift (since 1880) a big deal? A: It isn't!