Ice core studies confirm accuracy of climate models

Space & Earth / Earth Sciences

Sep 11, 2008 | 2.9 / 5 (36) | 22

An analysis has been completed of the global carbon cycle and climate for a 70,000 year period in the most recent Ice Age, showing a remarkable correlation between carbon dioxide levels and surprisingly abrupt changes in ...

Big freeze plunged Europe into ice age in months

Space & Earth / Earth Sciences

Nov 30, 2009 | 4 / 5 (17) | 7

In the film, 'The Day After Tomorrow' the world enters the icy grip of a new glacial period within the space of just a few weeks. Now new research shows that this scenario may not be so far from the truth after all.

Gullies on Mars show tantalizing signs of recent water activity

Space & Earth / Space Exploration

Mar 02, 2009 | 4.4 / 5 (19) | 15

(PhysOrg.com) -- Planetary geologists at Brown University have found a gully fan system on Mars that formed about 1.25 million years ago. The fan offers compelling evidence that it was formed by melt water ...

Carcasses of dead walruses spotted on Alaska coast

Biology / Ecology

Sep 17, 2009 | 5 / 5 (1) | 1

(AP) -- Up to 200 dead walruses have been spotted on the shore of Chukchi Sea on Alaska's northwest coast.

Research indicates ocean current shutdown may be gradual

Space & Earth / Earth Sciences

Jul 16, 2009 | 3.9 / 5 (7) | 6

The findings of a major new study are consistent with gradual changes of current systems in the North Atlantic Ocean, rather than a more sudden shutdown that could lead to rapid climate changes in Europe and elsewhere.

New Antarctic seabed sonar images reveal clues to sea-level rise

Space & Earth / Earth Sciences

May 05, 2009 | 3.4 / 5 (7) | 0

Motorway-sized troughs and channels carved into Antarctica's continental shelves by glaciers thousands of years ago could help scientists to predict future sea-level rise according to a report in the journal ...

Past climate of the northern Antarctic Peninsular informs global warming debate

Space & Earth / Earth Sciences

Nov 06, 2009 | 2.8 / 5 (9) | 1

The seriousness of current global warming is underlined by a reconstruction of climate at Maxwell Bay in the South Shetland Islands of the Antarctic Peninsula over approximately the last 14,000 years, which ...

International Greenland Ice Coring Effort Sets New Drilling Record in 2009

Space & Earth / Earth Sciences

Aug 26, 2009 | 4.5 / 5 (2) | 2

(PhysOrg.com) -- A new international research effort on the Greenland ice sheet with the University of Colorado at Boulder as the lead U.S. institution set a record for single-season deep ice-core drilling ...

Critical turning point can trigger abrupt climate change

Space & Earth / Earth Sciences

Apr 20, 2009 | 4.6 / 5 (58) | 9

Ice ages are the greatest natural climate changes in recent geological times. Their rise and fall are caused by slight changes in the Earth's orbit around the Sun due to the influence of the other planets. But we do not know ...

Research team draws 150-meter ice core from McCall Glacier

Space & Earth / Earth Sciences

Jul 11, 2008 | 3.5 / 5 (8) | 1

A 150-meter ice core pulled from the McCall Glacier in the Arctic National Wildlife Refuge this summer may offer researchers their first quantitative look at up to two centuries of climate change in the region.

Peruvian glacial retreats linked to European events of Little Ice Age

Space & Earth / Earth Sciences

Sep 24, 2009 | 4 / 5 (5) | 0

(PhysOrg.com) -- A new study that reports precise ages for glacial moraines in southern Peru links climate swings in the tropics to those of Europe and North America during the Little Ice Age approximately ...

After mastodons and mammoths, a transformed landscape

Space & Earth / Earth Sciences

Nov 19, 2009 | 4.6 / 5 (12) | 1

(PhysOrg.com) -- Roughly 15,000 years ago, at the end of the last ice age, North America's vast assemblage of large animals -- including such iconic creatures as mammoths, mastodons, camels, horses, ground ...

The rise of oxygen caused Earth's earliest ice age

Space & Earth / Earth Sciences

May 07, 2009 | 4.6 / 5 (20) | 6

(PhysOrg.com) -- Geologists may have uncovered the answer to an age-old question - an ice-age-old question, that is. It appears that Earth's earliest ice ages may have been due to the rise of oxygen in Earth's ...

Ice Age lesson predicts a faster rise in sea level

Space & Earth / Earth Sciences

Aug 31, 2008 | 4.2 / 5 (51) | 27

If the lessons being learned by scientists about the demise of the last great North American ice sheet are correct, estimates of global sea level rise from a melting Greenland ice sheet may be seriously underestimated.

Earth's most prominent rainfall feature creeping northward

Space & Earth / Earth Sciences

Jul 01, 2009 | 4.4 / 5 (12) | 3

The rain band near the equator that determines the supply of freshwater to nearly a billion people throughout the tropics and subtropics has been creeping north for more than 300 years, probably because of ...