http://www.physorg.com/ en-us Physorg.com internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine. (PhysOrg.com) -- A team of Anglo-French scientists studying sedimentary deposits in the Bay of Biscay have concluded that Britain and France were separated by a "super-river" during three periods of glaciations, and they have produced a more complete picture of the process of separation than previously available. http://www.physorg.com/news178954083.html Space & Earth Wed, 02 Dec 2009 09:30:01 EST news178954083 Intervals of regional warmth and cold in the past are linked to the El Niño phenomenon and the so-called "North Atlantic Oscillation" in the Northern hemisphere's jet stream, according to a team of climate scientists. These linkages may be important in assessing the regional effects of future climate change. http://www.physorg.com/news178459644.html Space & Earth Thu, 26 Nov 2009 14:10:05 EST news178459644 A new study provides "incontrovertible evidence" that the volcanic super-eruption of Toba on the island of Sumatra about 73,000 years ago deforested much of central India, some 3,000 miles from the epicenter, researchers report. http://www.physorg.com/news178210720.html Space & Earth Mon, 23 Nov 2009 14:59:10 EST news178210720 (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 sloths and giant beavers -- began their precipitous slide to extinction. http://www.physorg.com/news177864298.html Space & Earth Thu, 19 Nov 2009 14:45:49 EST news177864298 During the last ice age, massive glaciers covered much of our planet. However, a region of Alaska, Siberia and the Canadian Yukon remained ice-free. This region, known as Beringia, supported unique organisms and was an important haven for evolution. Now, scientists may have uncovered how Beringia supported such diversity at a time when conditions for life were harsh. http://www.physorg.com/news176056791.html Space & Earth Thu, 29 Oct 2009 17:50:03 EST news176056791 (PhysOrg.com) -- Researchers here have discovered the pivotal role that volcanoes played in a deadly ice age 450 million years ago. http://www.physorg.com/news175785444.html Space & Earth Mon, 26 Oct 2009 14:18:02 EST news175785444 In a new study in the journal Ecological Monographs, ecologists estimate that Arctic lands and oceans are responsible for up to 25 percent of the global net sink of atmospheric carbon dioxide. Under current predictions of global warming, this Arctic sink could be diminished or reversed, potentially accelerating predicted rates of climate change. http://www.physorg.com/news174744498.html Space & Earth Wed, 14 Oct 2009 13:08:57 EST news174744498 The origin of the 'Celtic fringe' of genetically and culturally distinctive people in the northern and western British Isles is the source of fierce academic controversy. http://www.physorg.com/news173513472.html Biology Wed, 30 Sep 2009 07:11:43 EST news173513472 (PhysOrg.com) -- Today's Scandinavians are not descended from the people who came to Scandinavia at the conclusion of the last ice age but, apparently, from a population that arrived later, concurrently with the introduction of agriculture. This is one conclusion of a new study straddling the borderline between genetics and archaeology, which involved Swedish researchers and which has now been published in the journal Current Biology. http://www.physorg.com/news173022084.html Biology Thu, 24 Sep 2009 16:20:01 EST news173022084 (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 150 to 350 years ago. The study, published this week in the journal Science, "brings us one step closer to understanding global-scale patterns of glacier activity and climate during the Little Ice Age," says lead author Joe Licciardi, associate professor of Earth sciences at the University of New Hampshire. "The more we know about our recent climate past, the better we can understand our modern and future climate." http://www.physorg.com/news172930044.html Space & Earth Thu, 24 Sep 2009 14:00:01 EST news172930044 (PhysOrg.com) -- DNA study suggests that further waves of prehistoric immigration are waiting to be discovered. Central and northern Europe's first farmers were immigrants with barely any ancestral ties to the modern population, a study has found. http://www.physorg.com/news171208706.html Other Sciences Thu, 03 Sep 2009 15:50:02 EST news171208706 Researchers have largely put to rest a long debate on the underlying mechanism that has caused periodic ice ages on Earth for the past 2.5 million years - they are ultimately linked to slight shifts in solar radiation caused by predictable changes in Earth's rotation and axis. http://www.physorg.com/news168791411.html Space & Earth Thu, 06 Aug 2009 16:20:02 EST news168791411 (PhysOrg.com) -- People often talk about greenhouse gases and their effect on the earth's climate as if those effects were new. But greenhouse gases have been around for hundreds of millennia, playing a key role in the start of the ice ages in the Northern Hemisphere 2.72 million years ago. http://www.physorg.com/news168703415.html Space & Earth Wed, 05 Aug 2009 15:50:05 EST news168703415 One of the biggest glaciers in the southern hemisphere shrivelled by a fifth in 40 years, French scientists said on Wednesday. http://www.physorg.com/news167479149.html Space & Earth Wed, 22 Jul 2009 11:20:02 EST news167479149 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. http://www.physorg.com/news166973872.html Space & Earth Thu, 16 Jul 2009 14:38:17 EST news166973872 Remains of woolly mammoths have been found in southern Spain, proving that the chilly grip of the last Ice Age extended farther south than thought, palaeontologists said on Thursday. http://www.physorg.com/news166370061.html Other Sciences Thu, 09 Jul 2009 15:30:01 EST news166370061 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 a warmer world, according to research published in the July issue of Nature Geoscience. http://www.physorg.com/news165675816.html Space & Earth Wed, 01 Jul 2009 15:10:01 EST news165675816 The sun is the focus of a deepening mystery. Solar scientists want to know: Why is the sun so quiet? http://www.physorg.com/news165402599.html Space & Earth Sun, 28 Jun 2009 11:10:01 EST news165402599 Researchers have reconstructed atmospheric carbon dioxide levels over the past 2.1 million years in the sharpest detail yet, shedding new light on its role in the earth's cycles of cooling and warming. http://www.physorg.com/news164553313.html Space & Earth Thu, 18 Jun 2009 14:15:41 EST news164553313 Geologists at the University of Leicester have shown that an ancient Ice Age, once regarded as a brief ‘blip`, in fact lasted for 30 million years. http://www.physorg.com/news164358670.html Space & Earth Tue, 16 Jun 2009 08:13:05 EST news164358670 (PhysOrg.com) -- Fossilised corals from tropical Tahiti show that the behaviour of ice sheets is much more volatile and dynamic than previously thought, a team led by Oxford University scientists has found. http://www.physorg.com/news159794635.html Space & Earth Fri, 24 Apr 2009 12:26:16 EST news159794635 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 the exact relationship between the changes in the Earth's orbit and the changes in climate. New research from the Niels Bohr Institute indicates that there can be changes in the CO2 levels in the atmosphere that suddenly reach a critical turning point and with that trigger the dramatic climate changes. The results are published in the American journal Paleoceanography. http://www.physorg.com/news159448477.html Space & Earth Mon, 20 Apr 2009 12:15:35 EST news159448477 Scientists have come to agree that different environments impact the evolution of new species. Now experiments conducted at the University of British Columbia are showing for the first time that the reverse is also true. http://www.physorg.com/news157826837.html Biology Wed, 01 Apr 2009 17:48:06 EST news157826837 Dust trapped deep in Antarctic ice sheets is helping scientists unravel details of past climate change. http://www.physorg.com/news157558498.html Space & Earth Sun, 29 Mar 2009 15:15:30 EST news157558498 A newly published dissertation by Linda Ampel from the Department of Physical Geography and Quaternary Geology at Stockholm University in Sweden examined how rapid climate changes during the most recent ice age affected ecosystems in an area in continental Europe. http://www.physorg.com/news155830602.html Biology Mon, 09 Mar 2009 15:17:31 EST news155830602 (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 that originated in nearby snow and ice deposits and may stand as the most recent period when water flowed on the planet. http://www.physorg.com/news155210345.html Space & Earth Mon, 02 Mar 2009 09:59:43 EST news155210345 As if straight out of prehistory, dozens of bison emerge timidly from the dark trunks of a primeval forest, their imposing bulk masking their vulnerability. http://www.physorg.com/news154867537.html Biology Thu, 26 Feb 2009 10:46:43 EST news154867537 (PhysOrg.com) -- New climate maps of the Earth`s surface during the height of the last Ice Age support predictions that northern Australia will become wetter and southern Australia drier due to climate change. http://www.physorg.com/news151612069.html Space & Earth Mon, 19 Jan 2009 18:28:21 EST news151612069 New research indicates that the ocean could rise in the next 100 years to a meter higher than the current sea level - which is three times higher than predictions from the UN's Intergovernmental Panel on Climate Change, IPCC. The groundbreaking new results from an international collaboration between researchers from the Niels Bohr Institute at the University of Copenhagen, England and Finland are published in the scientific journal Climate Dynamics. http://www.physorg.com/news150645386.html Space & Earth Thu, 08 Jan 2009 13:56:26 EST news150645386 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 climate. http://www.physorg.com/news140359867.html Space & Earth Thu, 11 Sep 2008 13:51:07 EST news140359867