2000ppm CO2?!! Wow, there's a long way to go before we can claim a world record: <Computer calculations by the team showed that carbon dioxide levels in the atmosphere must have swung back and forth between 250 parts per million to 2,000 parts per million, Montanez said.
The world froze again and thawed again as carbon dioxide levels rose and fell until, by about 265 million years ago, the continent warmed and the end came to the "most widespread and long-lived icehouse of the last half-billion years," Montanez and her colleagues wrote in their report. "This global warming event accompanied a permanent transition to an ice-free world," they wrote.
That "permanent" ice-free world, they said, lasted until about 3 million years ago when a new ice age began -- an age that has continued with some fluctuations until the latest warming period began within the past century or two, and has accelerated ever since. >
The world is freezing up. Earth is not in happy balance and never has been, contrary to wishful fantasy. It has been eons of gradual crystallization and freezing as the ecosphere is stripped bare and the atmosphere thinned. We are on a one way trip to frozen, like a roller coaster starting high, going up and down, but in the end, it's gradually down.
Mqurice |
