Research suggests that not only did wings evolve in dinosaurs earlier than previously thought, they may have evolved merely for courtship displays. A study in Science describes three Ornithomimosaur specimens – distantly related to birds – from Canada. Both juvenile and adult specimens had evidence of downy feathers, but only an adult had wing-like structures….
You can call them “unaffiliated,” as in a recent Pew poll, or “nones”—or even just “not very religious.” A brand new poll by the Public Religion Research Institute divides this group further (and somewhat counterintuitively) into “unattached,” “atheists/agnostics,” and “seculars.” But whatever you call them, this ever-growing cohort of unchurched Americans makes up, at 23%,…
Scientists have demonstrated a new type of gene therapy that would – in principle – allow mothers to avoid saddling their children with rare diseases that could result in heart problems, dementia, diabetes, deafness and other significant health issues. The disorders in question are all due to mutations in one of the 37 genes in…
The world’s deep seafloors are dark and airless places, but vast swaths may pulse gently with energy conducted through a type of newly discovered bacteria that forms living electrical cables. The bacteria were first detected in 2010 by researchers perplexed at chemical fluctuations in sediments from the bottom of Aarhus Bay in Denmark. Almost instantaneously…
One of the lowest mass supermassive black holes ever observed in the middle of a galaxy has been identified, thanks to NASA’s Chandra X-ray Observatory and several other observatories. The host galaxy is of a type not expected to harbor supermassive black holes, suggesting that this black hole, while related to its supermassive cousins, may…
Drinking a moderate amount of alcohol can have an impact on the ability of brain cells to regenerate, according to new research. The study, published in the journal Neuroscience, suggests that even drinking a couple of glasses of wine each day could decrease the creation of adult brain cells by as much as 40%. Lead…
In a study published in the journal Neurology of almost 700 people born in 1936, researchers found physically active people showed fewer signs of brain shrinkage and other deterioration than those who got less exercise. At the same time, social and intellectual activities such as visiting family and friends, reading, playing intellectually stimulating games or…
Stars ripped from their home galaxies as they collide with other galaxies can get slung into giant invisible cocoons of dark matter, researchers say, which might explain mysterious radiation pervading the sky. These findings suggest the halos of dark matter surrounding galaxies are not completely dark after all, but contain a small number of stars,…
The center of our galaxy, as seen by the powerful Visible and Infrared Survey Telescope for Astronomy (VISTA) instrument in northern Chile, has been captured in a digital image that represents the largest catalog of the stars there to date, some 84 million of them (10 times more than earlier catalogs). The original image covers…
The helpfulness of grandmothers is the reason humans don’t die in their thirties the way chimpanzees do, new research shows – and may even explain our bigger brains. Computer simulations show that with only a little grandmotherly care, animals with chimpanzee lifespans evolve to reach a human level in less than 60,000 years. “Grandmothering was…