http://phys.org/ en-us Phys.org internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine. Most of us want to swim in a lake where we can see our toes. Clear, oxygen-rich water supports not only human swimmers, but also intricate webs of animal and microbial life. That life can be disrupted when too many nutrients—from fertilizers, pollution, and other factors—overload the system. In those cases, aquatic ecosystems can cross a tipping point: the nutrients cause algae to bloom, and the extra bacteria eating the extra algae use up all the oxygen in the water. The end result is a murky, green lake that is difficult to restore, despite herculean interventions. http://phys.org/news285926575.html Space & Earth Tue, 23 Apr 2013 09:03:11 EST news285926575 (Phys.org)—Fifty years of Athabasca oil sands development has left a legacy of contaminants in lake ecosystems and that contamination reaches further from the development areas than previously recognized, according to new research at Queen's University. http://phys.org/news276805180.html Space & Earth Mon, 07 Jan 2013 18:19:52 EST news276805180 A project by three Bowling Green State University biologists and a colleague is expected to unleash a virtual tsunami of information that will be usable for years to come not only by them but also by scientists worldwide studying greenhouse gases and lake ecosystems. http://phys.org/news239559700.html Biology Thu, 03 Nov 2011 17:21:56 EST news239559700 (PhysOrg.com) -- In the first comprehensive global survey of temperature trends in major lakes, NASA researchers determined Earth's largest lakes have warmed during the past 25 years in response to climate change. http://phys.org/news209750548.html Space & Earth Tue, 23 Nov 2010 16:02:50 EST news209750548 Melting glaciers in the American West are releasing chemicals that cause ecosystem changes in alpine lakes, including large quantities of nitrogen that reduces biodiversity, according to an international research team led by University of Maine paleoecologist Jasmine Saros. http://phys.org/news206107658.html Space & Earth Tue, 12 Oct 2010 13:07:57 EST news206107658 (PhysOrg.com) -- A new JPL study examines the impact recent variability in climate is having on the surface temperatures of large lakes in California and Nevada. http://phys.org/news180630986.html Space & Earth Mon, 21 Dec 2009 15:30:02 EST news180630986