(AP) -- A heart transplant survivor has added another first to her long string of mountaineering feats since getting a new heart 13 years ago - a dangerous 2 1/2-day climb up the sheer, 2,000-foot face of Half Dome, Yosemite National Park's famed granite monolith.
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Patients will face delays in getting diagnostic scans due to severe shortage of imaging agents
A global shortage of medical isotopes* used in over 80% of routine diagnostic nuclear imaging procedures such as heart imaging, bone scans and some cancer detection procedures, will cause delays and cancellations to diagnostic examinations across the UK and Europe in the next few weeks, predict experts on bmj.com today.
Skipping Atomic-scale Stones to Study Some Chemistry Basics
Thought experiment: a carbon dioxide molecule—think of a cheerleader’s baton—comes slanting in at high speed over a dense liquid, strikes the surface and ricochets. How does it tumble? Fast or slow? Forward, backward or sideways? These are not idle questions because simple events like the tumbling molecule go to the heart of the chemistry and physics of gas-liquid interactions. These cover a broad swath of important chemical processes—including breathing—for which details of the encounter are just coming into view.
Liver disease plagues obese adolescents
(AP) -- In a new and disturbing twist on the obesity epidemic, some overweight teenagers have severe liver damage caused by too much body fat, and a handful have needed liver transplants.
MySpace links users to US hurricane emergency alerts
In what is heralded as the seeds of an Internet-age emergency broadcast system, MySpace has teamed with the US Department of Homeland Security (DHS) to spread news on hurricanes through users of the online social network.
Know your text-messaging limits before being caught at school
Beneath the desk, agile fingers flit across the keypad. Above, eye contact with the teacher never breaks. The cell-phone text message is sent, unnoticed. Or noticed.
Bisphenol A linked to metabolic syndrome in human tissue
New research from the University of Cincinnati (UC) implicates the primary chemical used to produce hard plastics—bisphenol A (BPA)—as a risk factor for metabolic syndrome and its consequences.
Low-birth-weight children should have their blood pressure checked, researchers find
Blood pressure in low-birth-weight children younger than 3 years of age not only can be measured but should be, researchers at UT Southwestern Medical Center have found. The findings appear in the September issue of
Pediatrics.
Researchers create new stem cell screening tool
Stem cell research is the next great leap in medicine. In the future, new tissue grown in a laboratory could replace a failing heart, or new cells take the place of damaged cells in the brain. Rather than using stem cells from embryonic sources, which opens difficult ethical and complicated scientific issues, scientists have been looking to adult human stem cells, culled from a person's own body. Adult stem cells are now being cultivated from various tissues in the body -- from skin, bones and even wisdom teeth.
