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Read science articles on the ice age, glaciation and climatology. Discover the connection between ice ages and global warming.
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Paleoclimate, proxies, paleosols, and precipitation: A look to the future

Fri, 02/20/2015 - 12:33
Precipitation reconstructions are essential for predicting impacts of future climate change and preparing for potential changes in terrestrial environmental conditions. Reliable proxy records of paleoprecipitation, especially from past warm periods, are a valuable tool for assessing and modeling future soil and plant moisture and local water availability. However, current terrestrial proxies are limited in their applications, and as a result, a wide range of paleoenvironments are underrepresented in the geologic record.
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Greenland is melting: The past might tell what the future holds

Fri, 02/20/2015 - 08:48
Scientists have managed to quantify how the Greenland Ice Sheet reacted to a warm period 8,000-5,000 years ago. Back then temperatures were 2-4 degrees C warmer than they are in the present. Their results are important as we are rapidly closing in on similar temperatures.
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Out of Africa: Did humans migrate quickly and all-at-once or in phases based on weather?

Fri, 02/20/2015 - 07:37
Considerable debate surrounds the migration of human populations out of Africa. Two predominant hypotheses concerning the timing contrast in their emphasis on the role of the Arabian interior and its changing climate. In one scenario, human populations expanded rapidly from Africa to southern Asia via the coastlines of Arabia approx. 50,000 to 60,000 years ago. Another model suggests that dispersal into the Arabian interior began much earlier (approx. 75,000 to 130,000 years ago) during multiple phases, when increased rainfall provided sufficient freshwater to support expanding populations.
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Recent research provides new data on chemical gardens, whose formation is a mystery for science

Tue, 02/17/2015 - 11:27
Recent research has yielded new data on chemical gardens, mysterious formations produced when certain solid salts -- copper sulfate, cobalt chloride -- are added to an aqueous solution of sodium silicate.
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Climate change can cause loss of important ice dynamics in streams

Mon, 02/16/2015 - 05:48
Ice and winter floods are important natural disturbances for maintaining species-rich riparian zones along northern watercourses. If the climate becomes warmer this disturbance might be lost. This could potentially lead to a less diverse riparian zone.
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Carbon release from ocean helped end the Ice Age

Wed, 02/11/2015 - 12:20
A release of carbon dioxide from the deep ocean helped bring an end to the last Ice Age, according to new research. The study shows that carbon stored in an isolated reservoir deep in the Southern Ocean re-connected with the atmosphere, driving a rise in atmospheric CO2 and an increase in global temperatures. The finding gives scientists an insight into how the ocean affects the carbon cycle and climate change.
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Global sea ice diminishing, despite Antarctic gains

Tue, 02/10/2015 - 15:01
Sea ice increases in Antarctica do not make up for the accelerated Arctic sea ice loss of the last decades, a new study finds. As a whole, the planet has been shedding sea ice at an average annual rate of 13,500 square miles (35,000 square kilometers) since 1979, the equivalent of losing an area of sea ice larger than the state of Maryland every year.
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Floods created home of Europe's biggest waterfall

Mon, 02/09/2015 - 15:14
A massive canyon that is home to Europe's most powerful waterfall was created in a matter of days by extreme flooding, new research reveals.
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Earliest evidence of large-scale human-produced air pollution in South America found

Mon, 02/09/2015 - 15:11
Researchers have uncovered the earliest evidence of widespread, human-produced air pollution in South America -- from the Spanish conquest of the Inca.
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Ancient snow patches melting at record speed

Fri, 02/06/2015 - 06:12
Norway is dotted with small glaciers and permanent snow patches that contain all sorts of archaeological treasures, from ancient shoes to 5000-year-old arrowheads. But climate change has turned up the temperature on these snowfields and they are vanishing at an astonishing rate.
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Seafloor volcano pulses may alter climate: Strikingly regular patterns, from weeks to eons

Thu, 02/05/2015 - 13:29
A new study shows that undersea volcanoes flare up on strikingly regular cycles, ranging from two weeks to 100,000 years -- and, that they erupt almost exclusively during the first six months of each year. The pulses -- apparently tied to short- and long-term changes in earth's orbit, and to sea levels -- may help trigger natural climate swings.
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Tracking glaciers with accelerators

Thu, 02/05/2015 - 11:27
Geologists once thought that, until about 18,000 years ago, a mammoth glacier covered the top two-thirds of Ireland. Recently, however, they found evidence that it wasn't just the top two-thirds: The Irish glacier was much larger, completely engulfing the country and extending far offshore.
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Methane seepage from Arctic seabed occurring for millions of years

Thu, 02/05/2015 - 09:19
Natural seepage of methane offshore the Arctic archipelago Svalbard has been occurring periodically for at least 2.7 million years. Major events of methane emissions happened at least twice during this period, according to a new study.
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Heavy rainfall events becoming more frequent on Big Island, Hawaii

Thu, 02/05/2015 - 08:52
A recent study determined that heavy rainfall events have become more frequent over the last 50 years on Hawai'i Island. For instance, a rare storm with daily precipitation of nearly 12 inches, occurring once every 20 years by 1960, has become a rather common storm event on the Big Island of Hawai'i -- returning every 3-5 years by 2009.
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Evidence from warm past confirms recent IPCC estimates of climate sensitivity

Wed, 02/04/2015 - 12:41
New evidence showing the level of atmospheric carbon dioxide millions of years ago supports recent climate change predictions from the Intergovernmental Panel on Climate Change.
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Earth's orbit affects the stability of Antarctica's Eastern ice cap

Tue, 02/03/2015 - 08:43
Scientists have found that there is a direct relation between the changes in the earth's orbit and the stability of the Eastern ice cap of Antarctica, more specifically, on the continental fringe of Wilkes Land (East Antarctica).
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Iceland rises as its glaciers melt from climate change

Thu, 01/29/2015 - 10:37
Earth's crust under Iceland is rebounding as global warming melts the island's great ice caps. In south-central Iceland some sites are moving upward as much as 1.4 inches (35 mm) per year. A new paper is the first to show the current fast uplift of the Icelandic crust is a result of accelerated melting of the island's glaciers and coincides with the onset of warming that began about 30 years ago, the researchers said.
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Erratic as normal: Arctic sea ice loss expected to be bumpy in the short term

Wed, 01/28/2015 - 15:05
Arctic sea ice extent plunged precipitously from 2001 to 2007, then barely budged between 2007 and 2013. Even in a warming world, researchers should expect such unusual periods of no change -- and rapid change -- at the world's northern reaches, according to a new paper.
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Smothered oceans: Extreme oxygen loss in oceans accompanied past global climate change

Wed, 01/28/2015 - 14:21
From the subarctic Pacific to the Chilean margins, extreme oxygen loss is stretching from the upper ocean to about 3,000 meters deep. In some oceanic regions, such loss occurred within 100 years or less, according to a new study.
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Nordic marine scientists: Showcasing growing pressure on oceans?

Wed, 01/28/2015 - 10:38
A group of 13 scientists argue that the Nordic countries are in a unique position to showcase how to handle the growing pressure on the oceans. However, this relies on a collective ability to regard change as connected.
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