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When the Mediteranean Sea flooded human settlements

Science Daily - Thu, 03/22/2018 - 10:27
Around 7,600 years ago, the emergence of agricultural settlements in Southeastern Europe and subsequent progress of civilization suddenly came to a standstill. This was most likely caused by an abrupt sea level rise in the northern Aegean Sea. Researchers have now detected evidence of this in the fossils of tiny calcifying marine algae preserved in seafloor sediments.

Landscape ridges may hold clues about ice age and climate change

Science Daily - Thu, 03/22/2018 - 09:32
Researchers say the landscape may also hold answers to how glaciers helped form the current terrain and provide insight into the progression of climate change.

Cutting greenhouse gas emissions would help spare cities worldwide from rising seas

Science Daily - Wed, 03/21/2018 - 11:16
Coastal cities worldwide would face a reduced threat from sea level rise if society reduced greenhouse gas emissions, with especially significant benefits for New York and other US East Coast cities, new research indicates.

Pacific influences European weather

Science Daily - Wed, 03/21/2018 - 08:10
Sea surface temperature in the distant tropical Pacific can influence November weather in Europe.

The Arctic sea-ice loss and winter temperatures in Eurasia

Science Daily - Wed, 03/21/2018 - 08:04
A long debate of the role of the sea ice and the winter temperatures in Eurasia has got a new contribution. Probably no connection, a new study says.

Wind, sea ice patterns point to climate change in western Arctic

Science Daily - Tue, 03/20/2018 - 11:34
A major shift in western Arctic wind patterns occurred throughout the winter of 2017 and the resulting changes in sea ice movement are possible indicators of a changing climate, says a researcher.

Geoengineering polar glaciers to slow sea-level rise

Science Daily - Mon, 03/19/2018 - 13:45
Targeted geoengineering to preserve continental ice sheets deserves serious research and investment, argues an international team of researchers. Without intervention, by 2100 most large coastal cities will face sea levels that are more than three feet higher than they are currently.

Glacier mass loss: Past the point of no return

Science Daily - Mon, 03/19/2018 - 11:42
Researchers show in a recent study that the further melting of glaciers cannot be prevented in the current century -- even if all emissions were stopped now. However, due to the slow reaction of glaciers to climate change, our behavior has a massive impact beyond the 21st century: In the long run, five hundred meters by car with a mid-range vehicle will cost one kilogram of glacier ice.

Arctic sea ice becoming a spring hazard for North Atlantic ships

Science Daily - Mon, 03/19/2018 - 10:57
More Arctic sea ice is entering the North Atlantic Ocean than before, making it increasingly dangerous for ships to navigate those waters in late spring, according to new research.

Preventing hurricanes using air bubbles

Science Daily - Mon, 03/19/2018 - 08:10
Many people have tried to find ways of preventing hurricanes before they make landfall, resulting in the loss of human lives. Researchers believe that the answer lies in cold bubbles.

Volcanic eruption influenced Iceland's conversion to Christianity

Science Daily - Mon, 03/19/2018 - 08:07
Memories of the largest lava flood in the history of Iceland, recorded in an apocalyptic medieval poem, were used to drive the island's conversion to Christianity, new research suggests.

Soot transported from elsewhere in world contributes little to melting of some Antarctic glaciers

Science Daily - Fri, 03/16/2018 - 18:25
Airborne soot produced by wildfires and fossil-fuel combustion and transported to the remote McMurdo Dry Valleys of Antarctica contains levels of black carbon too low to contribute significantly to the melting of local glaciers, according to a new study.

Wandering greenhouse gas

Science Daily - Fri, 03/16/2018 - 11:11
On the seafloor of the shallow coastal regions north of Siberia, microorganisms produce methane when they break down plant remains. If this greenhouse gas finds its way into the water, it can also become trapped in the sea ice that forms in these coastal waters.

New understanding of Kenyan paleoenvironments opens window on human evolution in the area

Science Daily - Fri, 03/16/2018 - 09:04
Interest in human evolution has stimulated new geological work in the southern rift valley of Kenya. A new article presents the results of more than 15 years of field research on complex strata representing the last 500,000 years of geological history in an active rift system.

Half a degree more global warming could flood out 5 million more people

Science Daily - Thu, 03/15/2018 - 10:06
A new study finds that by 2150, the seemingly small difference between a global temperature increase of 1.5 and 2.0 degrees Celsius would mean the permanent inundation of lands currently home to about 5 million people, including 60,000 who live on small island nations.

Greenland glaciers' varied vulnerability to melting

Science Daily - Wed, 03/14/2018 - 13:49
Using data from NASA missions observing Earth, researchers have created new maps of the bed topography beneath a score of glaciers in southeast Greenland, thereby gaining a much better understanding of why some are undergoing rapid retreat and others are relatively stable.

Eastern Mediterranean summer will be two months longer by end of 21st century

Science Daily - Wed, 03/14/2018 - 09:19
The eastern Mediterranean is experiencing monumental climate changes poised to significantly affect regional ecosystems and human health. According to a new study, these changes will drastically alter the duration of summer and winter in the region by the end of this century.

Exceptionally large amount of winter snow in Northern Hemisphere this year

Science Daily - Wed, 03/14/2018 - 08:27
The new Arctic Now product shows with one picture the extent of the area in the Northern Hemisphere currently covered by ice and snow. This kind of information, which shows the accurate state of the Arctic, becomes increasingly important due to climate change.

Chain reaction of fast-draining lakes poses new risk for Greenland ice sheet

Science Daily - Wed, 03/14/2018 - 08:23
A growing network of lakes on the Greenland ice sheet has been found to drain in a chain reaction that speeds up the flow of the ice sheet, threatening its stability.

Unique diamond impurities indicate water deep in Earth's mantle

Science Daily - Fri, 03/09/2018 - 16:07
Scientists have discovered the first direct evidence that fluid water pockets may exist as far as 500 miles deep into the Earth's mantle.

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