Originally Posted by Truth Detector

None of what you posted here can prove the case for "man" caused global warming. In order to PROVE that it is man caused, one must then explain why there have been at least four major ice ages in the Earth's past with corresponding heating and melting long before man walked the earth.

All I am asking for here is some intellectual curiosity and explanation of how this all has occurred many times in the distant past without man?

So please explain to me the CO2 levels and warming that have occurred four times in the past and the global cooling that resulted in ICE ages four times in the past according to scientists; and then explain how they occurred without man's involvement and how this time it involves them.

The FACT is that we have been part of a warming trend from the last ice age which started over 10,000 years ago.

Sidebar: I was just on a camping visit to Yosemite Park. They tell me it was formed when the ice sheets and glaciers carved the valley out, then retreated. NOTE: They retreated long before man walked the earth.

Ice age - Wikipedia, the free encyclopedia

The earliest hypothesized ice age, called the Huronian, was around 2.7 to 2.3 billion years ago during the early Proterozoic Eon.

The earliest well-documented ice age, and probably the most severe of the last 1 billion years, occurred from 850 to 630 million years ago (the Cryogenian period) and may have produced a Snowball Earth in which permanent ice covered the entire globe.

A minor ice age, the Andean-Saharan, occurred from 460 to 430 million years ago, during the Late Ordovician and the Silurian period.

There were extensive polar ice caps at intervals from 350 to 260 million years ago, during the Carboniferous and early Permian Periods, associated with the Karoo Ice Age.

Since then, the world has seen cycles of glaciation with ice sheets advancing and retreating on 40,000- and 100,000-year time scales called glacials (glacial advance) and interglacials (glacial retreat). The earth is currently in an interglacial, and the last glacial period ended about 10,000 years ago. All that remains of the continental ice sheets are the Greenland and Antarctic ice sheets.