[Carter08]

Originally Posted by Mark17

I don't think it is controversial, or easily dismissed, that huge glaciers pushed south through the northern 2/3 of Minnesota about 10,000 years ago, carving out most of our 13,000 +/- lakes. Imagine how huge those ice sheets must've been, not just across, but thick and heavy enough to gouge big lake basins. Imagine how much ice expansion had to happen for these huge glaciers to move hundreds of miles, slowly changing the landscape.

And then imagine how extremely cold it must've been, even in summer, for those glaciers to continue to grow and expand, rather than melting away. And not just for one or two years, but probably hundreds if not thousands of years or more.

Now the thought of temps rising one or two degrees over the next 100 years throws some people into a panic.

Looks like you’ve spent your life studying this. Great conclusion you’ve reached through those rigorous studies.