ScienceDaily Environment Headlines
for Saturday, March 5, 2011
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Fossils of horse teeth indicate 'you are what you eat' (March 4, 2011) -- Fossil records verify a long-standing theory that horses evolved through natural selection. Scientists arrived at the conclusion after examining the teeth of 6,500 fossil horses representing 222 different populations of more than 70 extinct horse species. ... > full story
Observing Arctic ice-edge plankton blooms from space (March 4, 2011) -- Ongoing climate-driven changes to the Arctic sea-ice could have a significant impact on the blooming of tiny planktonic plants (phytoplankton) with important implications for the Arctic ecosystem, according to new research, ... > full story
Rising carbon dioxide is causing plants to have fewer pores, releasing less water to the atmosphere (March 4, 2011) -- As carbon dioxide levels have risen during the last 150 years, the density of pores that allow plants to breathe has dwindled by 34 percent, restricting the amount of water vapor the plants release to the atmosphere, report scientists. ... > full story
New system can warn of tsunamis within minutes (March 4, 2011) -- Seismologists have developed a new system that could be used to warn future populations of an impending tsunami only minutes after the initial earthquake. The system, known as RTerg, could help reduce the death toll by giving local residents valuable time to move to safer ground. ... > full story
New light-sensing mechanism found in neurons (March 4, 2011) -- Scientists have discovered a second form of phototransduction light sensing in cells that is derived from vitamin B2. This discovery may reveal new information about cellular processes controlled by light. ... > full story
Worms strike see-saw balance in disease resistance (March 4, 2011) -- New research has shown that nematode worms have to trade-off resistance to different diseases, gaining resistance to one microbe at the expense of becoming more vulnerable to another. This finding reveals that the worms, called C. elegans, have a much more complex immune system than was previously thought and shows how important such trade-offs are across the animal kingdom. ... > full story
Scientists create cell assembly line: New technology synthesizes cellular structures from simple starting materials (March 4, 2011) -- Borrowing a page from modern manufacturing, scientists have built a microscopic assembly line that mass produces synthetic cell-like compartments. ... > full story
NASA's Glory satellite fails to reach orbit (March 4, 2011) -- NASA's Glory spacecraft launched aboard a Taurus XL rocket from Vandenberg Air Force Base in California March 4, 2011 at 5:09:45 a.m. EST failed to reach orbit. Telemetry indicated the fairing, the protective shell atop the Taurus XL rocket, did not separate as expected about three minutes after launch. ... > full story
Risks of chemical exposure: Scientists call for 'swifter and sounder' testing of chemicals (March 4, 2011) -- Scientific societies representing 40,000 researchers and clinicians are asking that federal regulators tap a broader range of expertise when evaluating the risks of chemicals to which Americans are being increasingly exposed. ... > full story
Some Antarctic ice is forming from bottom (March 4, 2011) -- Scientists working in the remotest part of Antarctica have discovered that liquid water locked deep under the continent's coat of ice regularly thaws and refreezes to the bottom, creating as much as half the thickness of the ice in places, and actively modifying its structure. The finding, which turns common perceptions of glacial formation upside down, could reshape scientists' understanding of how the ice sheet expands and moves, and how it might react to warming climate, they say. ... > full story
Sex differences in male and female learning revealed by gibbons (March 4, 2011) -- Differences in the way male and female learning has evolved have been revealed by new research into gibbons. ... > full story
Ecological adaptation likely to influence impacts of climate change (March 4, 2011) -- Animals' capacity to adapt is a factor in how they are likely to respond to changing climate conditions. ... > full story
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