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Science News for December 14, 2010


The AVE pollutes 29 percent less than traditional trains

A study by the Spanish Railways Foundation found that high-speed trains, such as the AVE, consume 29% less energy and produce 31kg less CO2 per passenger compared to traditional trains. The main advantage of high-speed lines is not in reducing fossil fuel consumption, but in attracting passengers who would otherwise travel by air or car.

SourceSpanish Foundation for Science and Technology·JournalTransportation Research Record Journal of the Transportation Research Board·DateDec 14, 2010

1 tale told is 2 tails gained

Researchers from Arizona State University are studying Anolis lizards to understand their ability to regenerate tissues, with potential applications in treating human osteoarthritis and spinal cord injuries. The team is using molecular methods and the lizard's genome sequence to identify key genes involved in regeneration.

Unique case study on Alzheimer's disease

A Swedish case study reveals how Alzheimer's disease progresses, with high amyloid plaque levels at early stages and declining brain energy. The discovery sheds light on the role of nicotinic receptors and neuroinflammation in the disease, offering new insights for diagnosis and treatment.

SourceKarolinska Institutet·JournalBrain·DateDec 14, 2010

Once upon a time in the Intensive Care Unit ...

Research led by McGill University Health Centre found that nearly 70% of parents reported feeling closer to their babies after reading to them in the NICU. The practice also encouraged parents to continue reading at home, with those who read to their child in the NICU three times more likely to do so.

SourceMcGill University Health Centre·JournalJournal of Developmental & Behavioral Pediatrics·DateDec 14, 2010

Making wafers faster by making features smaller

Researchers developed a new intense 13.5-nm light source using tin and lithium plasmas, which can reduce feature size by an order of magnitude, resolving the fundamental limit in semiconductor manufacturing. The technology has shown promising results, with tin plasmas producing twice as much emission as lithium plasmas.

SourceAmerican Institute of Physics·JournalJournal of Applied Physics·DateDec 14, 2010

Zebrafish provide new hope for cancer treatment

Researchers used zebrafish to track the behavior of cancer cells and immune cells, discovering that cancer cells produce hydrogen peroxide to attract immune cells. This co-option of the immune system allows tumors to grow and spread, but blocking this interaction can prevent tumor formation.

SourcePLOS·JournalPLOS Biology·DateDec 14, 2010

Tackling the erosion of a special river island

A team of researchers led by David Furbish from Vanderbilt University is studying the erosion of Locke Island, which has been alarmingly eroding away since the 1970s. The island's difficulties began when the east bank of the river adjacent to it collapsed, causing a landslide that pinched down the channel flowing around the island.

Researchers discover new signaling pathway linked to inflammatory disease

Researchers have identified a key inhibitory role for the IL-1 signaling pathway in the human innate immune system, revealing its impact on inflammatory bowel disease (IBD) and anti-inflammatory cytokine production. The study suggests that certain drugs used to treat conditions like rheumatoid arthritis may be harmful to IBD patients.

SourceUniversity of California - San Diego·JournalJournal of Experimental Medicine·DateDec 14, 2010

Special section on stigma in Perspectives on Psychological Science: Group differences, not deficits

This special section of Perspectives on Psychological Science explores how psychologists can avoid stigmatizing groups by framing individual and group differences as strengths. Experts discuss the importance of challenging biases and stereotypes in research, teaching, and advocacy to promote a more inclusive field of psychology.

SourceAssociation for Psychological Science·JournalPerspectives on Psychological Science·DateDec 14, 2010

New asthma research breaks the mold

Scientists have discovered that many people with asthma actually had the mould growing in their own lungs. A study by University of Leicester researchers found that 6 out of 10 people with asthma who were allergic to a common mould grew the mould from their sputum, leading to fixed narrowing of the airways.

SourceUniversity of Leicester·JournalAmerican Journal of Respiratory and Critical Care Medicine·DateDec 14, 2010

Optical water quality assessment

A USGS study assessed the McKenzie River in Oregon, measuring optical properties to understand dissolved organic carbon and its impact on drinking water quality. The results indicated that sources of dissolved organic carbon originated upstream and were linked to human activity.

SourceAmerican Society of Agronomy·JournalJournal of Environmental Quality·DateDec 14, 2010

Iridium memories

Researchers incorporated nanocrystals of iridium into flash memory designs, demonstrating excellent memory properties and thermal stability. Iridium's high work function and melting point make it an attractive option for improving nonvolatile memory with enhanced trapping ability.

SourceAmerican Institute of Physics·JournalApplied Physics Letters·DateDec 14, 2010

A positive step in the face of uncertainty

ASU professors Patricia Gober and Craig Kirkwood assess the impact of climate change on water shortages in Phoenix. Their study provides options for solutions, including changing landscape type, limiting pools, and investing in leak fixes. By embracing uncertainty, residents can reduce risk and protect themselves from water scarcity.

SourceArizona State University·JournalProceedings of the National Academy of Sciences·DateDec 14, 2010

Vaccine boosts your immune system

Researchers have discovered a protein that can prevent chronic tissue inflammation and boost the immune system. The therapeutic vaccine has been shown to effectively treat conditions like multiple sclerosis and rheumatoid arthritis.

SourceUniversity of Copenhagen·JournalJournal of Clinical Investigation·DateDec 14, 2010

Neonatal intensive care in Mexico is cost effective

A study published in PLOS Medicine found that neonatal intensive care provides substantial population health benefits in Mexico relative to its costs, even for very premature babies. The study suggests that including neonatal intensive care in Mexico's Seguro Popular program is highly efficient in terms of overall benefits provided com...

SourcePLOS·JournalPLOS Medicine·DateDec 14, 2010

Violent games not to blame for youth aggression

A new study published in Journal of Youth and Adolescence found no link between violent video games and serious acts of youth aggression or violence. Instead, depression was identified as a strong predictor of youth violence and aggression.

SourceSpringer·JournalJournal of Youth and Adolescence·DateDec 14, 2010

Go ahead, drink your milk

A study published in the American Journal of Clinical Nutrition found no link between dairy consumption and increased risk of heart disease, stroke, or total mortality. The research also revealed that drinking three glasses of milk per day may lead to a reduced risk of cardiovascular disease.

SourceGlobal Dairy Platform·JournalAmerican Journal of Clinical Nutrition·DateDec 14, 2010

Human umbilical cord blood cells found to enhance survival and maturation of key brain cells

USF researchers discovered that human umbilical cord blood cells (HUCB) promote the growth and differentiation of hippocampal neurons in both young and old laboratory animals. HUCBs have been found to enhance survival, maturation, and arborization of key brain cells, potentially benefiting treating brain injury and degenerative disease...

SourceUniversity of South Florida (USF Health)·JournalAging and Disease·DateDec 14, 2010