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Science News for April 6, 2012


Long-term studies detect effects of disappearing snow and ice

Research over decades identifies impacts on burrowing animals, plant roots, and microorganisms like diatoms, which affects seabirds and mammals. Shrinking cryosphere also decreases carbon dioxide uptake from the atmosphere and alters land suitability for plants.

SourceAmerican Institute of Biological Sciences·JournalBioScience·DateApr 6, 2012
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Scientists forecast forest carbon loss

A recent study by Harvard University and the Smithsonian Institution found that development in Massachusetts could reduce forest carbon storage by 18% over the next half century. However, the researchers highlight the importance of expanding support for forestland protection to mitigate climate change.

SourceHarvard University·JournalBioScience·DateApr 6, 2012

Long-term research reveals causes and consequences of environmental change

A long-term study by the LTER Network reveals that cool, wet areas are vulnerable to climate change, while dry forested ecosystems conserve more water as temperatures rise. The research provides valuable insights for effective management of public water supplies and informing policy decisions.

SourceUniversity of New Mexico, Long Term Ecological Research (LTER) Network·JournalBioScience·DateApr 6, 2012

Impact of warming climate doesn't always translate to streamflow

A study of 35 headwater basins in the US and Canada found that warmer temperatures do not always lead to decreased streamflow rates. In fact, water flow decreases only at sites with winter snow and ice, while warmer and drier ecosystems show less impact.

SourceOregon State University·JournalBioScience·DateApr 6, 2012

Coordinating the circadian clock: Molecular pair controls time-keeping and fat metabolism

Researchers have discovered that Rev-erb proteins play a crucial role in controlling the body's internal clock and fat metabolism. When both proteins are not functioning, the liver fills with fat, leading to metabolic disorders. The study highlights the importance of understanding the circadian rhythm of metabolism.

SourceUniversity of Pennsylvania School of Medicine·JournalGenes & Development·DateApr 6, 2012

Researchers use game to change how scientists study disease outbreaks

An international team of scientists developed a game to train epidemiologists on mathematical models for studying outbreaks. The game, Muizenberg Mathematical Fever, simulates real-life epidemics and demonstrates the importance of collaboration between bio-mathematicians and classical epidemiologists.

SourceU.S. National Science Foundation·JournalPLOS Biology·DateApr 6, 2012
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Invasive heart test being dramatically overused, Stanford study shows

A Stanford study reveals that an invasive heart test is being dramatically overused, particularly among patients who recently underwent similar tests. The study found that the procedure, left ventriculography, was performed as an add-on during coronary angiograms at a rate of 81.8% in some cases, despite less-invasive methods available.

SourceStanford Medicine·JournalAmerican Heart Journal·DateApr 6, 2012

Predictors identified for rehospitalization among post-acute stroke patients

Researchers at the University of Texas Medical Branch identified sociodemographic and clinical factors associated with hospital readmission in post-acute stroke patients. Patients with better motor and cognitive abilities were less likely to be rehospitalized, while those reporting depressive symptoms and lower social support were most...

SourceUniversity of Texas Medical Branch at Galveston·DateApr 6, 2012

Scientists identify major source of cells' defense against oxidative stress

Researchers discovered that the Nrf2 protein plays a crucial role in protecting cells from oxidative stress, which is often exploited by cancer cells to become resistant to treatment. By selectively inhibiting Nrf2, cancer cells may become more susceptible to chemotherapy and radiation therapy.

SourceUniversity of Southern California·JournalJournal of Biological Chemistry·DateApr 6, 2012
Celestron NexStar 8SE Computerized Telescope

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Is some homophobia self-phobia?

Researchers discovered that individuals with unacknowledged attraction to the same sex and authoritarian parents are more likely to exhibit homophobic attitudes. The study suggests that homophobia can be a manifestation of internal conflict and repression, particularly in those who deny their own sexual orientation.

SourceUniversity of Rochester·JournalJournal of Personality and Social Psychology·DateApr 6, 2012