An ice age, or more precisely, a glacial age, is a period of long-term reduction in the temperature of the Earth's surface and atmosphere, resulting in the presence or expansion of continental ice sheets, polar ice sheets and alpine glaciers. Within a long-term ice age, individual pulses of cold climate are termed "glacial periods" (or alternatively "glacials" or "glaciations" or colloquially as "ice age"), and intermittent warm periods are called "interglacials". Glaciologically, ice age implies the presence of extensive ice sheets in the northern and southern hemispheres. By this definition, we are still in the ice age that began 2.6 million years ago at the start of the Pleistocene epoch, because the Greenland and Antarctic ice sheets still exist.
Read more about Ice Age: Origin of Ice Age Theory, Evidence For Ice Ages, Major Ice Ages, Glacials and Interglacials, Positive and Negative Feedbacks in Glacial Periods, Causes of Ice Ages, Recent Glacial and Interglacial Phases, Effects of Glaciation
Other articles related to "ice age, ice":
... Research from the 1990s has indicated that the Ice Age-era coastline of the British Columbia Coast was lower by about 100 metres (330 ft) ... and other activity at the 100-metre (330 ft) contour, and the Ice Age existence of such a coastal plain has put a new light on Ice Age populations in North America as well as on ...
... film from Blue Sky Studios, starring Sid the Sloth of Ice Age and a cameo appearance by Scrat ... It is the third in the series of Ice Age short films, the other two being Gone Nutty and No Time for Nuts ... Unlike the first two Ice Age short films, Surviving Sid focuses on Sid and a small group of camping children ...
... For example, the moving ice carved out the landscape in Canada (See Canadian Arctic Archipelago), Greenland, northern Eurasia and Antarctica ... The weight of the ice sheets was so great that they deformed the Earth's crust and mantle ... After the ice sheets melted, the ice-covered land rebounded ...
... Ice Age (2002) (prehistoric animals) Ice Age The Meltdown (2006) (prehistoric animals) Ice Age Dawn of the Dinosaurs (2009) (prehistoric animals) Ice Age Continental Drift (2012) (prehistoric animals ...
... is fragmented by the gravel left behind by ice age Alpine glaciers and is nearly half forested ... includes the Barnim heath habitats dating back to the ice age ... characterized by a varied hilly heath formed in the ice age ...
Famous quotes containing the words age and/or ice:
“His golden locks time hath to silver turned;
O time too swift, O swiftness never ceasing!
His youth gainst time and age hath ever spurned,
But spurned in vain; youth waneth by increasing.
Beauty, strength, youth are flowers but fading seen;
Duty, faith, love are roots, and ever green.”
—George Peele (15591596)
“Every incident connected with the breaking up of the rivers and ponds and the settling of the weather is particularly interesting to us who live in a climate of so great extremes. When the warmer days come, they who dwell near the river hear the ice crack at night with a startling whoop as loud as artillery, as if its icy fetters were rent from end to end, and within a few days see it rapidly going out. So the alligator comes out of the mud with quakings of the earth.”
—Henry David Thoreau (18171862)