The remnants of the previous ice age are quickly disappearing.  The glaciers are receding at rates of hundreds of miles in short periods of time.  This is a clear warning of where we are in terms of Terracycles.  At an increasing rate huge chunks of ice, greater in size than whole states and countries, are breaking away from the Antarctic to drift into warmer waters and liquefy.

Mountain glaciers in Western United States and Alaska are quickly receding, as are the passage ways through the Canadian Northwest Territories and other long frozen straights leading to the North Pole.  Polar Bears are losing ice packs long used for migration and now face more time in the water than crossing over frozen oceans.  The snows of Kilimanjaro are expected to disappear in less than two decades.

Receding glaciers are indisputable evidence, and even the smoking gun, that the world water level and temperature is rising rapidly.  For even though actual global temperature change has increased by only .6ºC, this does not take into account that a lot of heat has been expended in melting the glaciers.