Denny wrote:
In fact, the ground where I am as I type
this, had 2 miles high of blue ice piled on top of it a mere 20,000
years ago...

And probably the same 145,000 years ago, while 120,000
years ago it was hotter than it is today. Every time
in the past 400K yearswhen it got approximately as hot
as it is today, an ice age "immediately" followed in
cycles of between 80K and 120K years. Just the other
day, Congress had to cancel their Global Warming
meeting because of snow. :-)
--
73, Cecil http://www.w5dxp.com