ScienceDaily Top Science Headlines
for Sunday, November 14, 2010
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Discovery could reveal secrets of ancient Martian and terrestrial atmospheres (November 13, 2010) -- Chemists have uncovered a new chemical reaction on tiny particulates in the atmosphere that could allow scientists to gain a glimpse from ancient rocks of what the atmospheres of the Earth and Mars were like hundreds of millions years ago. ... > full story
Researchers unlock a secret of bacteria's immune system (November 13, 2010) -- Researchers have unlocked a secret of bacteria's immune system. The discovery may eventually make it possible to prevent certain bacteria from developing resistance to antibiotics. The scientists showed that this mechanism, called CRISPR/Cas, works by selecting foreign DNA segments and inserting them into very specific locations in a bacterium's genome. ... > full story
New ocean acidification study shows added danger to already struggling coral reefs (November 13, 2010) -- Over the next century recruitment of new corals could drop by 73 percent, as rising carbon dioxide levels turn the oceans more acidic. New research findings reveal a new danger to the already threatened Caribbean and Florida reef Elkhorn corals. ... > full story
Creams used to treat eczema could make it worse, study suggests (November 13, 2010) -- New research from the UK suggests that using emollient creams to relieve the symptoms of eczema could actually make the condition worse. The researchers have published a study showing that aqueous cream BP reduces the thickness of healthy skin over a period of four weeks, calling into question whether the cream should be used for treating eczema, particularly for children and babies who have more sensitive skin. ... > full story
Keeping the daily clock ticking in a fluctuating environment: Hints from a green alga (November 13, 2010) -- Researchers have uncovered a mechanism which explains how biological clocks accurately synchronize to the day/night cycle despite large fluctuations in light intensity during the day and from day to day. ... > full story
Better student performance with peer learning (November 13, 2010) -- Engineering students with average grades from upper secondary school can manage difficult courses just as well as students with high grades. At least, if a group of them meet an older student once a week during the first semester to discuss and solve maths problems and other difficult exercises from their courses, according to new research. ... > full story
Oceanography researchers discover toxic algae in open water (November 13, 2010) -- Researchers have discovered toxic algae in vast, remote regions of the open ocean for the first time. Harmful algal blooms are reported as increasing both geographically and in frequency along populated coastlines. This latest research shows that the ubiquitous diatom Pseudo-nitzschia -- an alga that produces the neurotoxin, domoic acid, or DA, in coastal regions -- actually also produces DA at many locations in the open Pacific. ... > full story
New DNA repair pathway (November 13, 2010) -- Researchers have found a new, inducible pathway for repairing DNA damaged by oxygen radicals. ... > full story
Decisions made by communities of bacteria trump game theory (November 13, 2010) -- A scientist has outlined how decisions made by communities of bacteria trump game theory. "When human beings make a decision," he says, "they think they're being rational." Bacteria, he explains, are both simpler and more sophisticated -- they can more effectively control the superfluous noise around decision making and make group decisions that contribute to the well-being of the entire bacterial colony. ... > full story
Anti-gout drug may decrease risk for colorectal adenoma progression (November 13, 2010) -- Allopurinol, a relatively inexpensive anti-gout medication that has been on the market for more than 20 years, may have some activity against colorectal adenomas, according to new research. ... > full story
Selected hens give new genetic insights (November 13, 2010) -- Studies of heavy, fast-growing hens and small, slow-growing hens provide important new knowledge on the origin of the genetic variation that has enabled them to adapt rapidly to new extreme environments. ... > full story
Fearless children show less empathy, more aggression, research finds (November 13, 2010) -- Preschool-aged children who demonstrate fearless behavior also reveal less empathy and more aggression towards their peers, new research shows. ... > full story
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