Τρίτη 10 Απριλίου 2012

Science News SciGuru.com

Science News SciGuru.com

Link to Science News from SciGuru.com

Decision-making can and must be learned – new test measures risk intelligence

Posted: 10 Apr 2012 07:15 AM PDT

Tests exist for evaluating personality, intelligence and memory. However, up to now, it was not easily possible to find out how good someone is at making decisions in risky situations. “Yet this is an important skill that has an enormous influence on many of our decisions,” says psychologist Edward Cokely, who came up with the idea of developing a quick test for this skill at the Max Planck Institute for Human Development in 2007.

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Eggs of enigmatic dinosaur discovered

Posted: 10 Apr 2012 06:24 AM PDT

An Argentine-Swedish research team has reported a 70 million years old pocket of fossilized bones and unique eggs of an enigmatic birdlike dinosaur in Patagonia.

- What makes the discovery unique are the two eggs preserved near articulated bones of its hindlimb. This is the first time the eggs are found in a close proximity to skeletal remains of an alvarezsaurid dinosaur, says Dr. Martin Kundrát, dinosaur expert from the group of Professor Per Erik Ahlberg at Uppsala University.

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Scientists Find Unexpected New Autism Gene

Posted: 09 Apr 2012 07:50 PM PDT

Scientists from the Keck School of Medicine of USC have discovered the first gene associated with autism that has genome-wide significance. The discovery, detailed in the April 4 edition of the journal Science Translational Medicine, may allow researchers to more effectively study the causes of autism and develop new treatments for the disorder.

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Evolution at the Sea: Long-term experiments indicate phytoplankton can adapt to ocean acidification

Posted: 09 Apr 2012 07:45 PM PDT

Scientists of the Helmholtz Centre for Ocean Research Kiel (GEOMAR) conducted a one year CO2 selection experiment using the calcifying microalgae Emiliania huxleyi and uncovered an enormous potential for adaptation to rapidly changing environments in this important phytoplankton species. After 500 generations under controlled CO2 conditions adapted cultures grew and calcified significantly better compared non-adapted control cultures when tested under ocean acidification conditions.

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On the Move

Posted: 09 Apr 2012 09:37 AM PDT

Cells on the move reach forward with lamellipodia and filopodia, cytoplasmic sheets and rods supported by branched networks or tight bundles of actin filaments. Cells without functional lamellipodia are still highly motile but lose their ability to stay on track, report researchers at the Stowers Institute for Medical Research in the April 9, 2012, online issue of the Journal of Cell Biology.

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Research finds bright future for alternative energy with greener solar cells

Posted: 09 Apr 2012 09:20 AM PDT

Even alternative energy technologies can sometimes be a little greener, according to a Kansas State University graduate student's research.

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Black flies may have a purpose after all

Posted: 09 Apr 2012 08:45 AM PDT

Black flies drink blood and spread disease such as river blindness-creating misery with their presence. A University of Georgia study, however, proves that the pesky insects can be useful.

Don Champagne, an entomology professor with the UGA College of Agricultural and Environmental Sciences, discovered a way to use the black fly's blood-sucking tactics for medical advancement. The results of his research were published in the journal PLoS One.

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Sexual reproduction brings long-term benefits, study shows

Posted: 09 Apr 2012 08:36 AM PDT

Courtship rituals can be all-consuming, demanding time and effort – but now scientists have discovered why it might be worth it.

Attracting a mate – which can take significant effort, such as in a peacock's show of feathers or the exhaustive rutting of stags – can produce benefits for a species in the long term, a study suggests.

Scientists have shown that animals and plants which reproduce sexually are at a considerable advantage to those species – such as some insects and reptiles – that reproduce without a partner.

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