The powerful black holes at the center of massive galaxies and galaxy clusters act as hearts to the systems, pumping energy out at regular intervals to regulate the growth of the black holes themselves, as well as star formation, according to new data from NASA’s Chandra X-Ray Observatory.
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The cancer preventive properties of broccoli and other cruciferous vegetables appear to work specifically in smokers, according to new research.
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NASA has successfully tested the first deep space communications network modeled on the Internet. Engineers from NASA’s Jet Propulsion Laboratory used software called Disruption-Tolerant Networking, or DTN, to transmit dozens of space images to and from a NASA science spacecraft located about more than 32 million kilometers (20 million miles) from Earth.
A newly developed equation produces more accurate estimates of the glomerular filtration rate, a key indicator of kidney function in patients with chronic kidney disease, according to new research.
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An ingenious social behavior that mobilizes yeast cells to cooperate in protecting each other from stress, antibiotics and other dangers is driven by the activity of a single gene, scientists report in the journal Cell. The cooperating cells use the same gene, dubbed FLO1, as a marker for detecting “cheaters:” cells that try to profit [...]
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All of us have experienced being in a new place and feeling certain that we have been there before. A new report published in Current Directions in Psychological Science describes recent findings about deja vu, including the many similarities that exist between déjà vu and our understanding of human recognition memory.
Anthropologists have discovered a group of primates not seen alive in 85 years. The pygmy tarsiers, furry Furby-like, or gremlin-looking, creatures about the size of a small mouse and weighing less than two ounces, have not been observed since they were last collected for a museum in 1921.
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The medicinal herb Ginkgo biloba does not reduce the risk of dementia or Alzheimer’s disease development in either the healthy elderly or those with mild cognitive impairment, according to a large multicenter trial.
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Fiber optics as light conductors are obviously not just a recent invention. Sponges (Porifera), the phylogenetically oldest, multicellular organisms (Metazoa) are able to transduce light inside their bodies by employing amorphous, siliceous structures. Already more than ten years ago, the finding of photosynthetically active organisms inside sponges raised the question, how they could survive there [...]
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ECG Tests No Better Than Routine Clinical Assessment At Predicting Future Heart Disease, Study Finds
ECG tests commonly given to people with suspected angina to predict the likelihood future of heart disease have limited accuracy, according to a new study.