News tagged with ice age

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Study shows unprecedented warmth in Arctic

(Phys.org) —The heat is on, at least in the Arctic. Average summer temperatures in the Eastern Canadian Arctic during the last 100 years are higher now than during any century in the past 44,000 years and ...

Oct 24, 2013
3.7 / 5 (45) 238 | with audio podcast

Traces of immense prehistoric ice sheets

Geologists and geophysicists of the Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research (AWI), discovered traces of large ice sheets from the Pleistocene on a seamount off the north-eastern ...

Sep 30, 2013
5 / 5 (2) 0

Tackling an Ice Age mystery

In the northern hemisphere, ice sheets ebb and flow in 100,000-year cycles, driven by varying amounts of sunlight falling on Earth's surface as its orbit and orientation toward the sun changes. But astronomical variations ...

Sep 05, 2013
4.8 / 5 (5) 0

Ice ages only thanks to feedback

Ice ages and warm periods have alternated fairly regularly in the Earth's history: the Earth's climate cools roughly every 100,000 years, with vast areas of North America, Europe and Asia being buried under ...

Aug 07, 2013
4.3 / 5 (32) 47 | with audio podcast

Westerly winds and CO2 levels

The end of the last Ice Age was preceded by a gradual rise in atmospheric CO2. A new study supports the idea that a shift in the position, and increase in the intensity, of zonal westerly winds in the Southern ...

Aug 07, 2013
3.6 / 5 (8) 1