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Science News for May 12, 2008


Can feces save the species?

Researchers use feces found by trained dogs to learn about the habits of rare and endangered mammals, revealing that farms with less than 30% natural vegetation have fewer endangered species. The study highlights the importance of preserving open grasslands for threatened species like maned wolf and giant anteater.

Study documents obesity and its association with heart risk

A recent study published in Archives of Internal Medicine has documented the association between obesity and increased risk of heart disease. The research found significant ethnic disparities in weight and cardiovascular health, with non-Hispanic white participants showing a higher prevalence of overweight and obesity.

SourceJAMA Network·JournalArchives of Internal Medicine·DateMay 12, 2008

Electrode re-implantation helps some Parkinson's disease patients

A study of seven patients with Parkinson's disease found that re-implanting electrodes to correct placement can improve symptoms and reduce medication doses for those who had poor results after initial implantation. The procedure led to significant improvements in motor function scores and reduced levodopa medication doses.

SourceJAMA Network·JournalArchives of Neurology·DateMay 12, 2008

Beyond nutrition -- plants deliver

The Plant Journal special issue explores how plants can convert their fixed carbon into fuels and other useful products. This provides a renewable and affordable source of carbon to sustain future economic development without negatively impacting the environment.

SourceWiley·JournalThe Plant Journal·DateMay 12, 2008

Ancient protein offers clues to killer condition

Researchers found a motor protein, myosin 2, remains structurally identical in turkeys and scallops despite their different physical paths. This suggests the protein's importance in regulating smooth muscle function, potentially holding key to understanding aneurisms in humans.

SourceUniversity of Leeds·JournalProceedings of the National Academy of Sciences·DateMay 12, 2008

Children better prepared for school if their parents read aloud to them

Children whose parents read aloud to them have better language and literacy skills when they start school. This interactive style of reading has a significant impact on their development. Additionally, the Reach Out and Read programme in Boston improved language skills in low-income families by increasing parents' reading habits.

SourceBMJ Group·JournalArchives of Disease in Childhood·DateMay 12, 2008

Seeing Alzheimer's amyloids

Scientists from Brandeis University and the Leibniz Institut have created a 3D image of an Alzheimer's peptide aggregate using electron microscopy. The study reveals the spaghetti-like structure of A-beta peptide aggregates, also known as amyloid fibrils.

SourceBrandeis University·JournalProceedings of the National Academy of Sciences·DateMay 12, 2008

Why did the EPA fire a respected toxicologist?

The EPA dismissed Deborah Rice, a highly respected toxicologist, after the chemical industry complained about her views on deca's health hazards. Herbert Needleman argues that this trend is not new and unique, citing his own dismissal for speaking out on lead poisoning.

SourcePLOS·JournalPLOS Biology·DateMay 12, 2008

Hot climate could shut down plate tectonics

A new study finds that Earth's plate tectonics could become unstable if the surface temperature rises by 100 degrees Fahrenheit or more for a few million years. This would cause the crust to become locked in place, leading to volcanic activity and a lack of tectonic plates moving.

SourceRice University·JournalEarth and Planetary Science Letters·DateMay 12, 2008

Both boys and girls negatively affected by sexual harassment

Girls were harassed more frequently than boys, but both sexes suffered negative effects from a school climate that tolerates girl's harassment. The study found a link between the climate and feelings of safety, withdrawal from school, and lowered self-esteem in both girls and boys.

SourceWiley·JournalPsychology of Women Quarterly·DateMay 12, 2008

What's the difference between a human and a fruit fly?

Scientists have developed a new way to estimate the total number of protein interactions in organisms, revealing that humans have approximately 10 times more protein interactions than fruit flies. This study contradicts previous comparisons based on gene numbers, which suggested that humans and fruit flies are relatively similar.

SourceImperial College London·JournalProceedings of the National Academy of Sciences·DateMay 12, 2008

Borrowers who complete homeownership education programs make better refinancing decisions

A study published in the Journal of Policy Analysis and Management found that borrowers who complete homeownership education and counseling programs are more informed about when to refinance. The effectiveness of these programs varies by type, with intensive classroom-based instruction showing significant impacts on borrowing behavior.

SourceWiley·JournalJournal of Policy Analysis and Management·DateMay 12, 2008

NOAA reports coastal waters show decline in contaminants

A 20-year study by NOAA reveals a positive trend in reducing contaminant levels in U.S. coastal waters, despite ongoing concerns about metals and industrial chemicals. The report highlights decreasing trends for pesticides like DDT and industrial chemicals PCBs, but notes continued issues with oil-related compounds and flame retardants.