Daily non-political popular news in brief.
Female plasma may not be as harmful as once thought
10-22-2007 · EurekAlert!As the national blood banking community considers limiting the use plasma from female donors because of a rare but potentially catastrophic lung condition, researchers from Duke University Medical Center have shown that this policy change might be premature.
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Keywords: female, plasma, harmful, once, thought
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- For some species, an upside to inbreeding
02-05-2007 · EurekAlert!
Although breeding between close kin is thought to be generally unfavorable from an evolutionary standpoint, in part because harmful mutations are more easily propagated through populations in this way, theory predicts that under some circumstances, the benefits of inbreeding may outweigh the costs. Researchers have now reported real-life evidence in support of this theory.
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- Protein fragments sequenced in 68 million-year-old Tyrannosaurus rex
04-12-2007 · EurekAlert!
In a venture once thought to lie outside the reach of science, researchers from Harvard Medical School and Beth Israel Deaconess Medical Center have captured and sequenced tiny pieces of collagen protein from a 68 million-year-old Tyrannosaurus rex. The protein fragments -- seven in all -- appear to most closely match amino acid sequences found in collagen of present day chickens, lending support to a recent and still controversial proposal that birds and dinosaurs are evolutionarily related.
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- New particles get a mass boost
10-01-2007 · EurekAlert!
A sophisticated, new analysis has revealed that the next frontier in particle physics is farther away than once thought. New forms of matter not predicted by the Standard Model of particle physics are most likely twice as massive as theorists had previously calculated, according to a just-published study.
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- Genome sequencing reveals key to viable ethanol production
03-02-2007 · EurekAlert!
As the national push for alternative energy sources heats up, researchers at the University of Rochester have for the first time identified how genes responsible for biomass breakdown are turned on in a microorganism that produces valuable ethanol from materials like grass and cornstalks.Waste products such as grass clippings and wood chips -- once thought too difficult to turn into ethanol -- may soon be fodder for hungry, gene-tweaked bacteria.
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- Chronic HIV-1 infection frequently fails to protect against superinfection
11-15-2007 · EurekAlert!
Natural HIV-1 infection does not always elicit a protective immune response, according to a new study published Nov. 16 in PLoS Pathogens. The team of researchers show how HIV-1 vaccines may not be as reliable against superinfection as once thought. This study suggests that immune responses found in natural HIV-1 infection may not be the best path to an effective HIV-1 vaccine.
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- Female auto crash rates increase alarmingly; airbags can be dangerous for tall and small people
05-16-2007 · EurekAlert!
Automobile crashes remain the leading cause of death for adolescents and young females are beginning to show an alarming increase in fatal automobile crashes related to alcohol use and a failure to use seatbelts. Another study found that airbags, while effective for people of medium stature (5'3" to 5'11") were actually harmful to people smaller than 4'11" and taller than 6'3".
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- Tundra disappearing at rapid rate
03-05-2007 · EurekAlert!
Forests of spruce trees and shrubs in parts of northern Canada are taking over what were once tundra landscapes -- forcing out the species that lived there. This shift can happen at a much faster speed than scientists originally thought, according to a new University of Alberta study that adds to the growing body of evidence on the effects of climate change.
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- Foxes get frisky in the far north
07-17-2007 · EurekAlert!
A team of researchers from the University of Alberta in Edmonton and the University of Quebec at Rimouski has gathered DNA evidence from adult foxes and their offspring, that proves that some arctic foxes are mixing it up when it comes to mating. From polyandry to multiple paternity and plural breeding, foxes once thought to be monogamous are proving to be quite frisky.
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- Food for Thought: A
02-10-2007 · Science News Online
A controversial trial of a chemically modified fat called an interesterified fat suggests that it is more harmful than is a partially hydrogenated vegetable oil.
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- Rise of dinosaurs in Late Triassic more gradual than once thought
07-19-2007 · EurekAlert!
The ancestors of dinosaurs seemed to disappear before the dinosaurs took over the Earth 200 million years ago, suggesting to many that dinosaurs were so successful that they rapidly out-competed their ancestors and drove them extinct. New fossil finds in New Mexico, however, show that this was not true -- dinosaurs and their ancestors lived side by side for 15-20 million years in the Late Triassic before the dinosaur precursors vanished.
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