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Science News Archive January 2011 - Page 4


Page 4 of 22

Training the brain to think ahead in addiction

Researchers have found that cognitive training can improve working memory and reduce addiction by teaching individuals to think ahead. The study, published in Biological Psychiatry, used an approach borrowed from rehabilitation of stroke or traumatic brain injury patients.

SourceElsevier·JournalBiological Psychiatry·DateJan 27, 2011

February 2011 Lithosphere highlights

The article discusses recent movements and past deformation in Central America, California, Turkey, and Canada. Key findings include the present rates and directions of movement between El Salvador and Nicaragua, as well as the role of low-angle normal faulting in active tectonics in the northern Owens Valley.

SourceGeological Society of America·JournalLithosphere·DateJan 26, 2011

Making a point

Researchers at Northwestern University developed a new method for rapidly prototyping nanoscale devices and structures, combining the benefits of scanning-probe lithography and polymer pen lithography. The technique, called hard-tip, soft-spring lithography, produces patterns with sub-50-nanometer resolution and scalability.

SourceNorthwestern University·JournalNature·DateJan 26, 2011

Eating poorly can make us depressed

A six-year study of 12,059 volunteers found that high intake of trans-fats increased the risk of depression by up to 48%, while polyunsaturated fats and olive oil were associated with a lower risk. The researchers suggest that diet may play a key role in both depression and cardiovascular disease.

SourcePLOS·JournalPLOS ONE·DateJan 26, 2011

Racial stereotyping found in US death certificates

A study found that US death certificates exhibit racial stereotyping, with discrepancies in racial classifications varying across the population. The researchers' review of 22,905 death certificates revealed patterns reflecting long-running stereotypes about violence and alcoholism.

SourcePLOS·JournalPLOS ONE·DateJan 26, 2011

Hormones dictate breeding success in birds

Scientists found that birds' hormone levels, particularly corticosterone and prolactin, play a crucial role in determining their reproductive success. Birds with low corticosterone values before breeding raised the most offspring, while those with high prolactin levels started laying eggs earlier and produced more offspring.

First study of dispersants in Gulf spill suggests a prolonged deepwater fate

A recent study by Woods Hole Oceanographic Institution scientists found that a major component of the dispersant used in the Deepwater Horizon oil spill remained intact in an oil-gas-laden plume three months after application. The study's results raise questions about the potential toxic effects of deep-water residue on marine life and...

SourceWoods Hole Oceanographic Institution·JournalEnvironmental Science & Technology·DateJan 26, 2011

Genetic archaeology finds parts of our genome more closely related to orangutans than chimps

A recent study published in Genome Research found that certain regions of the human genome are more similar to those of orangutans than chimpanzees, contrary to previous assumptions. This suggests that humans and orangutans shared a common ancestor with high genetic diversity, while chimpanzees may have experienced a genetic bottleneck.

SourceCold Spring Harbor Laboratory·JournalGenome Research·DateJan 26, 2011

Brain 'GPS' illuminated in migratory monarch butterflies

Researchers have identified a complex brain navigation system in migrating monarch butterflies that integrates internal compass, sun compass, and skylight cues to guide their long-distance migrations. The study reveals the integration of seemingly contradictory signals into a consistent neural representation of the environment.

SourceCell Press·JournalNeuron·DateJan 26, 2011