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Science News Archive 2009 - Page 63


Page 63 of 277

Self-sacrifice among strangers has more to do with nurture than nature

Researchers found that culturally learned behaviors are a better explanation for altruism than genetics. Altruism was more common in neighboring social groups with similar cultural practices, suggesting a gene-culture coevolution of prosocial propensities. This challenges traditional views on the role of nature versus nurture in shapin...

SourceU.S. National Science Foundation·JournalProceedings of the National Academy of Sciences·DateOct 12, 2009

Radio waves 'see' through walls

A wireless network of radio transmitters can track people moving behind solid walls, according to a new study. The system uses radio tomographic imaging (RTI) and has the potential to help law enforcement, rescue operations, and retail marketing.

SourceUniversity of Utah·JournalIEEE Transactions on Mobile Computing·DateOct 11, 2009

Blood counts are clues to human disease

A genome-wide association study identified 22 regions of the human genome associated with eight blood measurements, including haemoglobin concentration and platelet counts. These genetic variants are linked to increased risk of heart disease, coeliac disease, and type 1 diabetes in European populations.

SourceWellcome Trust Sanger Institute·JournalNature Genetics·DateOct 11, 2009

New strategy for mending broken hearts?

Researchers at Duke University have successfully grown a three-dimensional 'patch' of heart muscle cells using embryonic stem cells and a novel mold design. The patch exhibited the ability to contract and conduct electrical impulses, crucial attributes of native heart muscle cells.

No place like home: Africa's big cats show postcode preference

A new study reveals that Africa's big cats, including leopards, tend to avoid croplands and favor specific habitats. This research provides valuable insights into the spatial distribution of carnivores in Tanzania, shedding light on the impact of habitat conversion and climate change.

SourceWiley·JournalAnimal Conservation·DateOct 9, 2009

NIH launches 2009 H1N1 influenza vaccine trials in HIV-infected pregnant women

The National Institute of Allergy and Infectious Diseases (NIAID) is conducting clinical trials to test the safety and efficacy of the 2009 H1N1 influenza vaccine in HIV-infected pregnant women and children, youth. The trials aim to determine whether higher doses of the vaccine can elicit a protective immune response in these populations.

Tendon, ligament repair in horses focus of research

Researchers at Virginia Tech's Marion duPont Scott Equine Medical Center are studying the best ways to treat lameness in horses through tendon and ligament repair. Dr. Jennifer Barrett is investigating regenerative medicine techniques, including stem cell therapy, to regenerate damaged tendons and cartilage.