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Sawdust reinvented into super sponge for oil spills

Science Daily - Mon, 12/12/2016 - 14:26
Oil spills could be cleaned up in the icy, rough waters of the Arctic with a chemically modified sawdust material that absorbs up to five times its weight in oil and stays afloat for at least four months.

Jersey was a must-see tourist destination for Neanderthals for over 100,000 years

Science Daily - Mon, 12/12/2016 - 12:34
Neanderthals kept coming back to a coastal cave site in Jersey from at least 180,000 years ago until around 40,000 years ago. researchers report. As part of a re-examination of La Cotte de St Brelade and its surrounding landscape, archaeologists have taken a fresh look at artefacts and mammoth bones originally excavated from within the site's granite cliffs in the 1970s.

How the Antarctic Ice Sheet is affecting climate change

Science Daily - Mon, 12/12/2016 - 10:58
An international team of researchers has concluded that the Antarctic Ice Sheet actually plays a major role in regional and global climate variability -- a discovery that may also help explain why sea ice in the Southern Hemisphere has been increasing despite the warming of the rest of the Earth.

Mysterious 'crater' on Antarctica indication of vulnerable ice sheet

Science Daily - Mon, 12/12/2016 - 10:58
The East Antarctic ice sheet is more vulnerable than expected, due to a strong wind that brings warm air and blows away the snow. Scientists combined climate models, satellite observations and on-site measurements.

Mountain glaciers are showing some of the strongest responses to climate change

Science Daily - Mon, 12/12/2016 - 07:49
Mountain glaciers move slowly and it has been hard to pin an individual glacier's retreat to a change in global climate. A new method finds that for most of the glaciers studied, the observed retreat is more than 99 percent likely due to climate change.

Reindeer are shrinking: Will Santa need more to pull his sleigh?

Science Daily - Mon, 12/12/2016 - 07:46
Often portrayed as pulling Santa’s sleigh, reindeer are a Christmas staple. Now, ecologists have found that reindeer are shrinking due to the impact of climate change on their food supplies.

Climate change likely caused deadly 2016 avalanche in Tibet

Science Daily - Fri, 12/09/2016 - 07:08
On July 17, 2016, more than 70 million tons of ice broke off from the Aru glacier in the mountains of western Tibet and tumbled into a valley below, taking the lives of nine nomadic yak herders living there. Researchers conducted a kind of forensic analysis of the disaster, and the cause was likely climate change.

Cloud formation: How feldspar acts as ice nucleus

Science Daily - Fri, 12/09/2016 - 07:06
In the atmosphere, feldspar particles act as ice nuclei that make ice crystals grow in clouds and enable precipitation. The reason was found with the help of electron microscopy observations and molecular dynamics computer modeling. The ice nucleus proper is a quasi-hidden crystal surface of the feldspar that is exposed at surface defects only. The researchers present their findings that are of major relevance to the understanding of cloud and precipitation formation in Science.

Soil fertility: Global map of soil pH

Science Daily - Thu, 12/08/2016 - 13:34
Researchers create a global map of soil pH and illuminate how it changes between wet and dry climates.

Most of Greenland ice melted to bedrock in recent geologic past, says study

Science Daily - Wed, 12/07/2016 - 12:34
Scientists have found evidence in a chunk of bedrock drilled from nearly two miles below the summit of the Greenland ice sheet that the sheet nearly disappeared for an extended time in the last million years or so. The finding casts doubt on assumptions that Greenland has been relatively stable during the recent geological past, and implies that global warming could tip it into decline more precipitously than previously thought.

Greenland on thin ice?

Science Daily - Wed, 12/07/2016 - 12:34
First-of-their-kind studies provide new insight into the deep history of the Greenland Ice Sheet, looking back millions of years farther than previous techniques allowed. However, the two studies present some strongly contrasting evidence about how Greenland's ice sheet may have responded to past climate change.

Ice age vertebrates had mixed responses to climate change

Science Daily - Tue, 12/06/2016 - 13:26
New research examines how vertebrate species in the eastern United States ranging from snakes to mammals to birds responded to climate change over the last 500,000 years. The study reveals that contrary to expectation, the massive glaciers that expanded and contracted across the region affected animal populations in different ways at different times. The analysis provides a window into how animals might react to any kind of climate change, whether glacial cycles or global warming.

Sea ice hit record lows in November

Science Daily - Tue, 12/06/2016 - 13:26
Unusually high air temperatures and a warm ocean have led to a record low Arctic sea ice extent for November, according to scientists. In the Southern Hemisphere, Antarctic sea ice extent also hit a record low for the month, caused by moderately warm temperatures and a rapid shift in circumpolar winds.

Scientist uses clam shells to help build 1,000-year record of ocean climate

Science Daily - Tue, 12/06/2016 - 11:53
Scientists have sorted and studied thousands of clam shells to build a 1,000-year record of ocean conditions and climate changes at a spot just off North Iceland.

Predicting unpredictability: Information theory offers new way to read ice cores

Science Daily - Tue, 12/06/2016 - 11:53
A new technique based in information theory promises to improve researchers' ability to interpret ice core samples and our understanding of Earth's climate history.

During last warming period, Antarctica heated up 2 to 3 times more than planet average

Science Daily - Tue, 12/06/2016 - 10:15
A new study of warming after the last ice age 20,000 years ago confirms climate models that predict an amplification of warming at the poles. By 15,000 years ago, the Antarctic had warmed about 11 degrees Celsius, almost 3 times the average global warming (4 degrees Celsius). The calculations, based on temperature measurements down a 3.4-kilometer-deep borehole, prove that climate models do a good job of estimating past climatic conditions and, very likely, future changes.

Growing mosquito populations linked to urbanization, DDT's slow decay

Science Daily - Tue, 12/06/2016 - 10:02
Mosquito populations have increased as much as ten-fold over the past five decades in New York, New Jersey, and California, according to long-term datasets from mosquito monitoring programs. The number of mosquito species in these areas increased two- to four-fold in the same period. A new study finds the main drivers of these changes were the gradual waning of DDT concentrations in the environment and increased urbanization.

Longest-living animal gives up ocean climate secrets

Science Daily - Tue, 12/06/2016 - 10:02
A study of the longest-living animal on Earth, the quahog clam, has provided researchers with an unprecedented insight into the history of the oceans.

The coldest decade of the millennium?

Science Daily - Thu, 12/01/2016 - 10:53
While searching through historical archives to find out more about the 15th-century climate of what is now Belgium, northern France, Luxembourg, and the Netherlands, a researcher noticed something odd. Compared with other decades of the last millennium, many of the 1430s' winters and some springs were extremely cold in the Low Countries, as well as in other parts of Europe.

Ice Age hunters destroyed forests throughout Europe

Science Daily - Thu, 12/01/2016 - 08:28
Large-scale forest fires started by prehistoric hunter-gatherers are probably the reason why Europe is not more densely forested, researchers report.

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