JOHANNESBURG—At a tea party earlier today for a research team at the University of the Witwatersrand that has grown accustomed to making stunning discoveries of human fossils, a curious excitement erupted when Kristian Carlson unveiled a seemingly modest find: a rib bone from Australopithecus sediba ...
More and more physicians are investing in their own imaging equipment. But when a doctor stands to make money on each MRI he or she orders, it doesn't take a brain surgeon to figure out that they might be inclined to order too many scans.Patients with back problems whose orthopedic surgeons referred them for an MRI were much more likely to have their spinal lumbar scan come back clean—indicating that the test might not have been necessary—if their doc had a financial stake in the equipment being used, than if he or she didn't, according to new findings that were presented this week at the Radiological Society of North America's annual meeting in Chicago."It is important for patients to be aware of the problem of self-referral and to understand the conflict of interest that exists when their doctor orders an imaging exam and then collects money on that imaging exam," said Ben Paxton, a radiology resident who led the study at Duke University Medical Center in a prepared statement.Of 250 spine lumbar MRIs ordered by orthopedic surgeons who had financial interest in the imaging equipment, 106 scans came back negative—that is, without serious abnormalities...
Most of the lingering concerns that drivers have about electric vehicles (EVs) and plug-in hybrid electric vehicles (PHEVs) can be traced back to their batteries—in particular, cost and capacity...
After more than 15 years of international climate negotiations, it has become ever more clear that all the carbon dioxide emitted to shuttle diplomats from city to city to hash out a regime to curb climate change has been largely wasted...
In the spring of 2010, the world met Australopithecus sediba, a nearly two-million-year-old human relative whose remains were found at a site just a short drive from Johannesburg, South Africa...
New York, New York. A metropolis of gleaming skyscrapers, majestic brownstones and concrete as far as the eye can see. But on the northern border of Greenwich Village , a strange, little biological experiment is taking place...
Scientists have long known that whales communicate through sound patterns often referred to as songs and calls, but there's still a lot of mystery surrounding what these haunting sounds mean and whether different whales have distinct dialects...
Once the U.S. regains its ability to send humans into deep space, there's more than one nearby planet for them to explore
In most cases, you need to make a huge donation to have a building named after you. The Perimeter Institute, however, made no such demands on its new Stephen Hawking Centre because, well, he's Stephen Hawking .The renowned physicist, of course, is known for pushing the frontier of science, mentoring and inspiring younger generations, communicating discoveries to the public, and appearing in many television shows...
What would it take to convince you to spend $45 on a 100-watt lightbulb? A Silicon Valley company called Switch Lighting is banking that it has the answer.
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