Geologists have found evidence that sea ice extended to the equator 716.5 million years ago, bringing new precision to a “snowball Earth” event long suspected to have taken place around that time. The new findings — based on an analysis of ancient tropical rocks that are now found in remote northwestern Canada — bolster the [...]
Researchers have discovered how cells communicate with each other during times of cellular injury. The findings shed new light on how the body repairs itself when organs become diseased, through small particles known as microvesicles, and offers hope for tissue regeneration.
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Findings come from a comprehensive study that evaluated marathon race results, weather data, and air pollutant concentrations in seven marathons over a period of 8 to 28 years. The top three male and female finishing times were compared with the course record and contrasted with air pollutant levels, taking high temperatures that were detrimental to [...]
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Worms are important source of immunomodulatory proteins that could be used in the development of new drugs for the treatment of immune-mediated diseases such as inflammatory bowel disease (IBD). A research group in Belgium investigated the therapeutic effect of worm-derived proteins on experimental colitis in mice. Treatment with worm proteins ameliorated motility disturbances during murine [...]
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When people say they “had sex,” what transpired is anyone’s guess. A new study found that no uniform consensus existed when a representative sample of 18- to 96-year-olds was asked what the term meant to them. More than idle gossip, the answers to questions about sex can inform — or misinform — research, medical advice [...]
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Researchers have found a better way to trap light in photovoltaic cells through the use of vertical arrays of silicon nanowires. This could substantially cut the costs of solar electric power by reducing the quantity and quality of silicon needed for efficient solar panels.
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Researchers have developed an experimental vaccine for chikungunya virus and successfully tested it in monkeys.
Heat is often the enemy of computing and data storage, but a new experiment shows it could help reduce the amount of power needed to store data in magnetic memory.
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Components of the blood or hematopoietic system derive from stem cell subtypes rather than one single stem cell that gives rise to all the different kinds of blood cells equally, say scientists in a new report.
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Scientists have identified a protein called Sestrin that serves as a natural inhibitor of aging and age-related pathologies in fruit flies. They also showed that Sestrin, whose structure and biochemical function are conserved between flies and humans, is needed for regulation of a signaling pathway that is the central controller of aging and metabolism.
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