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Latest National Academy of Sciences Stories

2012-11-13 13:40:33

Fifteen science academies of Africa issued a joint statement in Lagos, Nigeria, today calling on the African scientific community to intensify its study of the impact of climate change. Noting that Africa's contribution of scientific information to understanding climate change has been "meagre" to date, the statement calls for African researchers to step up their observation, modeling, and analyses of the effects of climate change on a regional scale, and to help plan interventions to...

2012-11-06 03:38:23

New research suggests that just one or two individual herpes virus particles attack a skin cell in the first stage of an outbreak, resulting in a bottleneck in which the infection may be vulnerable to medical treatment. Unlike most viruses that spread to new cells by bombarding them with millions of particles, herpes simplex virus type 1 (HSV-1) – a virus that causes cold sores and genital lesions – requires just one or two viral particles to infect a skin cell in the first...

2012-11-02 14:33:03

UC Santa Barbara has reported an important discovery in the interdisciplinary study of split-brain research. The findings uncover dynamic changes in brain coordination patterns between left and right hemispheres. Split-brain research has been conducted for decades, and scientists have long ago shown that language processing is largely located in the left side of the brain. When words appear only in the left visual field —— an area processed by the right side of the brain...

2012-11-01 10:13:42

Proteins are able to self-assemble into a wide range of highly ordered structures that feature a diverse array of properties. Through biomimicry — technological innovation inspired by nature — humans hope to emulate proteins and produce our own version of self-assembling molecules. A key to accomplishing this is understanding how protein-folding — a process critical to the form and function of a protein — is extended from individual proteins to complex assemblies....

2012-10-31 03:38:26

A group of researchers in Israel, the United States and other nations have made important advances in the rapidly-expanding field of "regenerative medicine," outlining for the first time connections in genetic regulation that normally prevent birth defects in heart and facial muscles. Some of these problems are surprisingly common — about 1 percent of all people have a congenital heart defect. This basic research will provide a road map to ultimately allow scientists to grow the cell...

2012-10-30 19:05:43

Commercial medical tapes on the market today are great at keeping medical devices attached to the skin, but often can do damage–such as skin tissue tearing–once it's time to remove them. A research team from Brigham and Women's Hospital (BWH) has invented a quick-release tape that has the strong adhesion properties of commercial medical tape, but without the ouch factor upon removal. The team was led by Jeffrey Karp, PhD, BWH Division of Biomedical Engineering, Department of...

Cretaceous Extinction Worsened By Ecosystem Structures
2012-10-30 04:17:18

April Flowers for redOrbit.com - Your Universe Online A mass extinction, wiping out numerous species including the dinosaurs, marked the end of the Cretaceous Period. A new study, published in Proceedings of the National Academy of Sciences (PNAS), reveals that the structure of North American ecosystems made the extinction worse than it might have been. Mexico's Yucatan Peninsula is home to the now-buried Chicxulub impact crater, caused by a mountain-sized asteroid. This impact is...

2012-10-18 12:57:05

A University of British Columbia and Centre for Molecular Medicine and Therapeutics (CMMT) study has revealed that childhood poverty, stress as an adult, and demographics such as age, sex and ethnicity, all leave an imprint on a person´s genes. And, that this imprint could play a role in our immune response. The study was published last week in a special volume of the Proceedings of the National Academy of Sciences that looks at how experiences beginning before birth and in the years...

2012-10-09 10:50:36

Findings question earlier studies and shed light on fundamental cellular process Scientists at the Gladstone Institutes have mapped the precise frequency by which genes get turned on across the human genome, providing new insight into the most fundamental of cellular processes–and revealing new clues as to what happens when this process goes awry. In a study being published this week online in the Proceedings of the National Academy of Sciences, Gladstone Investigator Leor...

2012-10-09 10:38:31

Maternal depression and a common class of antidepressants can alter a crucial period of language development in babies, according to a new study by researchers at the University of British Columbia, Harvard University and the Child & Family Research Institute (CFRI) at BC Children's Hospital. Published today in the Proceedings of the National Academy of Sciences, the study finds that treatment of maternal depression with serotonin reuptake inhibitors (SRIs) can accelerate babies'...


Word of the Day
jument
  • A beast of burden; also, a beast in general.
'Jument' ultimately comes from the Latin 'jugum,' yoke.
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