The #Arctic #Climate Tipping Points: #Methane and the Future of the Biosphere | Global Research - Centre for Research on Globalization | RSE et Développement Durable | Scoop.it

As extreme temperatures, the rate of sea ice melt, the collapse of Greenland glaciers, the thawing of Siberian and Canadian permafrost and increased evaporation in the Arctic drive cold snow storms into Europe and North America, and as hurricanes and wild fires affect tropical and semi-tropical parts of the globe, it is becoming clear Earth is entering a period of uncontrollable climate tipping points consequent on the shift in composition and thereby the state of the atmosphere-ocean system. Analogies with geological methane-release events such as the 56 million years-old Paleocene-Eocene boundary thermal maximum and mass extinction (PETM) event, and even with the 251 Million years-old Permian-Triassic (PT) boundary and mass extinction event when some 95 percent of species were obliterated, are becoming more likely.


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