PROF. ANDREW GLIKSON: 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.
