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. It's the stuff of a Hollywood disaster epic: A comet plunges from outer space into the Earth's atmosphere, splitting the sky with a devastating shock wave that flattens forests and shakes the countryside. http://www.physorg.com/news179994144.html Space & Earth Mon, 14 Dec 2009 06:23:19 EST news179994144 Intervals of regional warmth and cold in the past are linked to the El Niņo 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 (PhysOrg.com) -- A new study of Antarctica's past climate reveals that temperatures during the warm periods between ice ages (interglacials) may have been higher than previously thought. The latest analysis of ice core records suggests that Antarctic temperatures may have been up to 6°C warmer than the present day. http://www.physorg.com/news177773495.html Space & Earth Wed, 18 Nov 2009 13:32:16 EST news177773495 Researchers spent two months this summer high in the Peruvian Andes and brought back two cores, the longest ever drilled from ice fields in the tropics. http://www.physorg.com/news176399362.html Space & Earth Mon, 02 Nov 2009 16:00:24 EST news176399362 (PhysOrg.com) -- A team of chemists from the U.S. and France has found compelling evidence of a previously undocumented large volcanic eruption that occurred exactly 200 years ago, in 1809. http://www.physorg.com/news176049231.html Space & Earth Thu, 29 Oct 2009 15:35:09 EST news176049231 Not that long ago - the blink of a geologic eye - global temperatures were so warm that ice on Greenland could have been hard to come by. Today, the largest island in the world is covered with ice 1.6 miles thick. Even so, Greenland has become a hot spot for climate scientists. Why? Because tiny bubbles trapped in the ice layers may help resolve a fundamental question about global warming: how fast and how much will ice sheets melt? http://www.physorg.com/news175191286.html Space & Earth Mon, 19 Oct 2009 17:30:13 EST news175191286 An analysis of sediment cores indicates that biological and chemical changes occurring at a remote Arctic lake are unprecedented over the past 200,000 years and likely are the result of human-caused climate change, according to a new study led by the University of Colorado at Boulder. http://www.physorg.com/news175188684.html Space & Earth Mon, 19 Oct 2009 17:20:02 EST news175188684 (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 this summer, recovering more than a mile of ice core that is expected to help scientists better assess the risks of abrupt climate change in the future. http://www.physorg.com/news170516207.html Space & Earth Wed, 26 Aug 2009 15:10:01 EST news170516207 The first season of the international drilling project NEEM (North Greenland Eemian Ice Drilling) in north-western Greenland was completed at August 20th. http://www.physorg.com/news170328188.html Space & Earth Mon, 24 Aug 2009 10:23:40 EST news170328188 Scientists from the National Oceanography Centre, Southampton, along with colleagues from Tuebingen and Bristol have reconstructed sea-level fluctuations over the last 520,000 years. Comparison of this record with data on global climate and CO2 levels from Antarctic ice cores suggests that even stabilization at today's CO2 levels may commit us to much greater sea-level rise over the next couple of millennia than previously thought. http://www.physorg.com/news164891348.html Space & Earth Mon, 22 Jun 2009 12:09:35 EST news164891348 More and more, scientists are getting a better grip on the nitrogen cycle. They are learning about sources of nitrogen and how this element changes as it loops from the nonliving, such as the atmosphere, soil or water, to the living, whether plants or animals. Scientists have determined that humans are disrupting the nitrogen cycle by altering the amount of nitrogen that is stored in the biosphere. http://www.physorg.com/news163344321.html Space & Earth Thu, 04 Jun 2009 14:28:56 EST news163344321 Natural releases of carbon dioxide from the Southern Ocean due to shifting wind patterns could have amplified global warming at the end of the last ice age--and could be repeated as manmade warming proceeds, a new paper in the journal Science suggests. http://www.physorg.com/news156088725.html Space & Earth Thu, 12 Mar 2009 14:59:29 EST news156088725 (PhysOrg.com) -- In recent years, public discussion of climate change has included concerns that increased levels of carbon dioxide will contribute to global warming, which in turn may change the circulation in the earth's oceans, with potentially disastrous consequences. http://www.physorg.com/news142260761.html Space & Earth Fri, 03 Oct 2008 13:52:41 EST news142260761 New research, reported this week in the online early edition of the Proceedings of the National Academy of Sciences, finds that coal burning, primarily in North America and Europe, contaminated the Arctic and potentially affected human health and ecosystems in and around Earth's polar regions. http://www.physorg.com/news138373476.html Space & Earth Tue, 19 Aug 2008 14:04:36 EST news138373476 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. http://www.physorg.com/news134988279.html Space & Earth Fri, 11 Jul 2008 09:44:39 EST news134988279