Study: The Late Cretaceous Period was likely ice-free

From the University of Missouri-Columbia COLUMBIA, Mo. – For years, scientists have thought that a continental ice sheet formed during the Late Cretaceous Period more than 90 million years ago when the climate was much warmer than it is today. Now, a University of Missouri researcher has found evidence suggesting that no ice sheet formed…

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CO2 by the numbers: having the courage to do nothing

Guest essay by Ed Hoskins. Some simple numbers on the effect of CO2 concentration on temperature As the temperature increasing effect of atmospheric CO2 is known to diminish logarithmically with increasing concentration, these notes clarify the actual amount of warming that might result from additional CO2 released into the atmosphere by man-kind and the temperature…

Carbon, on the uptake

From the University of Bristol Carbon cycling was much smaller during last ice age than in today’s climate Atmospheric carbon dioxide (CO2) is one of the most important greenhouse gases and the increase of its abundance in the atmosphere by fossil fuel burning is the main cause of future global warming. In past times, during…