ScienceDaily Environment Headlines
for Saturday, April 23, 2011
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Parasite strategy offers insight to help tackle sleeping sickness (April 22, 2011) -- Fresh insight into the survival strategy of the parasite that causes sleeping sickness could help inform new treatments for the disease. ... > full story
Lawn of native grasses beats traditional lawn for lushness, weed resistance (April 22, 2011) -- A lawn of regionally native grasses would take less resources to maintain while providing as lush a carpet as a common turfgrass used in the South, according to a new study. ... > full story
Jurassic spider from China is largest fossil specimen discovered (April 22, 2011) -- With a leg span of more than five inches, a recently named Jurassic period spider from China is the largest fossil specimen discovered, and one that has modern relatives in tropical climates today. ... > full story
Clouds, clouds, burning bright (April 22, 2011) -- High up in the sky near the poles some 50 miles above the ground, silvery blue clouds sometimes appear, shining brightly in the night. These are noctilucent or "night shining" clouds. Since 2007, a NASA mission called Aeronomy of Ice in the Mesosphere (AIM) has shown that the cloud formation is changing year to year, a process they believe is intimately tied to the weather and climate of the whole globe. ... > full story
Photovoltaic systems boost the sales price of California homes (April 22, 2011) -- New research finds strong evidence that homes with solar photovoltaic (PV) systems sell for a premium over homes without solar systems. The research is the first to empirically explore the existence and magnitude of residential PV sales price impacts across a large number of homes and over a wide geographic area. ... > full story
Learning to tolerate our microbial self: Bacteria co-opt human immune cells for mutual benefit (April 22, 2011) -- The human gut is filled with 100 trillion symbiotic bacteria which we blissfully live with, although they have many features similar to infectious bacteria we react against. What decides whether we ignore -- or fight? In the case of a common "friendly" gut bacterium, Bacteroides fragilis, researchers have discovered the surprising answer: The decision is not made by us, but by the bacteria, which co-opt cells of the immune system for our benefit ... and theirs. ... > full story
New technique improves sensitivity of PCR pathogen detection (April 22, 2011) -- A new procedure can improve polymerase chain reaction (PCR)-based methods of detecting plant disease organisms. ... > full story
Bacteria interrupted: Disabling coordinated behavior and virulence gene expression (April 22, 2011) -- New research reveals a strategy for disrupting the ability of bacteria to communicate and coordinate the expression of virulence factors. The study may lead to the development of new antibacterial therapeutics. ... > full story
Scotland's first marine reserve already producing benefits (April 22, 2011) -- Scotland's first fully protected marine reserve, and only the second in the UK, is already providing commercial and conservation benefits, according to new research. ... > full story
Prenatal pesticide exposure tied to lower IQ in children, study finds (April 22, 2011) -- A new study has found that prenatal exposure to organophosphate pesticides -- widely used on food crops -- is related to lower intelligence scores in children. Every tenfold increase in measures of organophosphates detected during a mother's pregnancy corresponded to a 5.5 point drop in overall IQ scores in children at age 7, the researchers found. ... > full story
Salmonella utilize multiple modes of infection: New mechanism that helps with invading host cells discovered (April 22, 2011) -- Scientists have discovered a new, hitherto unknown mechanism of Salmonella invasion into gut cells: In this entry mode, the bacteria exploit the muscle power of cells to be pulled into the host cell cytoplasm. Thus, the strategies Salmonella use to infect cells are more complex than previously thought. ... > full story
Genes causing antimalarial drug resistance identified (April 21, 2011) -- Using a pair of powerful genome-search techniques, researchers have identified several genes that may be implicated in the malaria parasite's notorious ability to rapidly evade drug treatments. ... > full story
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