As extreme temperatures, sea ice melt rates, collapse of Greenland glaciers, thawing of Siberian and Canadian permafrost, increased evaporation in the Arctic and intrusion of cold fronts into Europe and North America are rising, analogies with geological hyperthermal methane-release events such as the 56 m.y. old Paleocene-Eocene boundary thermal maximum and mass extinction (PETM), and … Continue reading ANDREW GLIKSON. The onset of climate tipping points… Continue reading »