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Tue, 27 Jan 2015 21:23:48 EST
Spider electro-combs its sticky nano-filaments
A spider commonly found in garden centers in Britain is giving fresh insights into how to spin incredibly long and strong fibers just a few nanometers thick. The majority of spiders spin silk threads several micrometers thick but unusually the 'garden centre spider' or 'feather-legged lace weaver' can spin nano-scale filaments. Now scientists think they are closer to understanding how this is done.
Tue, 27 Jan 2015 21:22:12 EST
Sugary drinks linked to earlier onset of menstrual periods
Girls who frequently consume sugary drinks tend to start their menstrual periods earlier than girls who do not, according to new research. The findings are important not only because of the growing problem of childhood obesity in a number of developed countries, but also because starting periods earlier is linked to an increased risk of breast cancer later in life.
Tue, 27 Jan 2015 21:21:58 EST
Psychopathic Violent Offenders’ Brains Can’t Understand Punishment
Psychopathic violent offenders have abnormalities in the parts of the brain related to learning from punishment, according to an MRI study.
Tue, 27 Jan 2015 16:49:47 EST
Researchers tune friction in ionic solids at the nanoscale
New experiments have uncovered a way of controlling friction on ionic surfaces at the nanoscale using electrical stimulation and ambient water vapor.
Tue, 27 Jan 2015 14:11:26 EST
NASA's Dawn spacecraft captures best-ever view of dwarf planet Ceres
NASA's Dawn spacecraft has returned the sharpest images ever seen of the dwarf planet Ceres. The images were taken 147,000 miles (237,000 kilometers) from Ceres on Jan. 25, and represent a new milestone for a spacecraft that soon will become the first human-made probe to visit a dwarf planet.
Tue, 27 Jan 2015 14:08:25 EST
Infant failure to thrive linked to lysosome dysfunction
Neonatal intestinal disorders that prevent infants from getting the nutrients they need may be caused by defects in the lysosomal system -- or cell recycling center -- that occur before weaning. Scientists provide a new target for research and future therapies to help infants unable to absorb milk nutrients and gain weight.
Tue, 27 Jan 2015 14:08:22 EST
Stomach acid-powered micromotors get their first test in a living animal
Researchers have shown that a micromotor fueled by stomach acid can take a bubble-powered ride inside a mouse. These tiny motors, each about one-fifth the width of a human hair, may someday offer a safer and more efficient way to deliver drugs or diagnose tumors. The experiment is the first to show that these micromotors can operate safely in a living animal.
Tue, 27 Jan 2015 14:08:20 EST
Early Mesoamericans affected by climate change
Scientists have reconstructed the past climate for the region around Cantona, a large fortified city in highland Mexico, and found the population drastically declined in the past, at least in part because of climate change.
Tue, 27 Jan 2015 14:08:17 EST
Dog disease in lions spread by multiple species
Canine distemper, a viral disease that's been infecting the famed lions of Tanzania's Serengeti National Park, appears to be spread by multiple animal species, according to a study published by a transcontinental team of scientists.
Tue, 27 Jan 2015 14:08:12 EST
New mechanism unlocked for evolution of green fluorescent protein
A primary challenge in the biosciences is to understand the way major evolutionary changes in nature are accomplished. Sometimes the route turns out to be very simple. An example of such simplicity is provided in a new publication that shows, for the first time, that a hinge migration mechanism, driven solely by long-range dynamic motions, can be the key for evolution of a green-to-red photoconvertible phenotype in a green fluorescent protein.
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