news blurb...temperature changes precede changes in carbon dioxide levels, not the other way around

from Liberty:

"In the last 1.6 million years there have been 63 alternations between warm and cold climates, and no indication that any of them were caused by changes in carbon dioxide levels. A recent study of a much longer period (600 million years) shows — without exception — that temperature changes precede changes in carbon dioxide levels, not the other way around. As the earth warms, the oceans yield more carbon dioxide to the atmosphere, because warmer water cannot hold as much carbon dioxide as colder water."