On Thu, 29 Mar 2007 23:44:16 -0400, Bob Brown . wrote:

So, you don't believe that there have been ice ages?

Yes, but I don't believe 20K years ago it was "a mile thick",
especially anywhere NEAR populated areas of today.

There were no humans in North or South America
20,000 years ago if lack of bones is an indication.

Since then, there are bones to show the migration
of Asians across the land bridge at that time into Alaska
and down the West Coast to become the descendants
of most western American Indians.

So without humans, your objection on the basis
of population centers seems weak.

And I am not convinced man is causing warming
with CO2 emissions.

Joe Fischer

In article , Bob Brown . wrote:
On Thu, 29 Mar 2007 16:27:57 -0000, (Robert Grumbine)
wrote:

In article , Bob Brown . wrote:
On Tue, 27 Mar 2007 16:56:14 -0500, Joe Fischer
wrote:

I am sure that 20,000 years a ago, where I am,
the temperature was 50 degrees colder, because
ice was a mile thick here, so I am sure it is warmer
now, but I have not seen any evidence that there
is an "upward trend".

Do you live on the Pole?

20K years ago a mile, or so, thick of ice? Hmmm , sounds like crazy
talk to me.

So, you don't believe that there have been ice ages?

Yes, but I don't believe 20K years ago it was "a mile thick",
especially anywhere NEAR populated areas of today.

Look up the CLIMAP reconstruction or any other more recent
version. Then identify the location of Chicago, Detroit, and
Toronto.

Perhaps quicker: How old do you think the earth is?

According to science, about 5 BILLION years.

4.55

Disappointed I didn't say 6,000?

Actually, you didn't answer. Question wasn't what science
had to say, but what _you_ thought was the case.

--
Robert Grumbine http://www.radix.net/~bobg/ Science faqs and amateur activities notes and links.
Sagredo (Galileo Galilei) "You present these recondite matters with too much
evidence and ease; this great facility makes them less appreciated than they
would be had they been presented in a more abstruse manner." Two New Sciences