..., critics have countered, if CO2 truly raises global
temperatures, how could an ice age have occurred when a greenhouse
effect much greater than today's was in full swing?
The answer: This particular ice age didn't begin when CO2 was at its
peak it began 10 million years earlier, when CO2 levels were at a
"Our results are consistent with the notion that CO2 concentrations
January 27, 2005
STUDY BOLSTERS GREENHOUSE EFFECT THEORY, SOLVES ICE AGE MYSTERY