Pre-Columbian America was plagued by decades-long megadroughts

In the August issue of Physics Today, climate scientists Toby Ault and Scott St. George share a pair of startling research findings. Between roughly 800 and 1500 CE, the American West suffered a succession of decades-long droughts, much longer than anything we’ve endured in modern history. And statistical models suggest that, as the climate warms, such megadroughts…

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Claim: World’s first animals caused global warming

From the University of Exeter and the “everything causes global warming and it’s bad, bad, according to our model and leaps of logic” department. The evolution of Earth’s first animals more than 500 million years ago caused global warming, new research shows. Some 520-540 million years ago, animal life evolved in the ocean and began…

HOW THE EARTH BECAME A HOTHOUSE: BY H2O

  Guest Post by Wim Röst  ABSTRACT Water, H2O, determines the ‘General Background Temperature’ for the Earth, resulting in Hothouse and Ice House Climate States. During geological periods the movement of continents changes the position of continents, oceans and seas. Because of the different configurations, a dominant warm or a dominant cold deep-water production configuration…