In the News
Dense Breasts, Hormone Levels Are Two Separate, Independent Risk Facto
The density of a woman's breast tissue and her level of sex hormones are two strong and independent risk factors for breast cancer, according to a team of researchers from Harvard and Georgetown universities. The finding dispels the common belief that the risk associated with dense breasts merely reflects the same risk associated with high levels of circulating sex hormones, they say. The Virtual Taxman Cometh
Some folks are racking up profits in online worlds. How far behind is the IRS? Commentary by Clive Thompson. Unconventional Brain Circuits Offer Clues To Insomnia-obesity Connecti
Unconventional wiring of the brain circuits that govern sleep and waking might explain the prevalence of insomnia and the condition's association with obesity, according to new work published in the April issue of Cell Metabolism. Characterized by a chronic inability to fall asleep or remain sleeping, insomnia is estimated to affect one in every eight Americans. By finding ways to interfere with that unconventional wiring, scientists may advance on new treatments for insomnia, the researchers said. Samuel Johnson Tercentenary 2009
"This site contains information about the celebrations to mark the 300th anniversary of the birth of Samuel Johnson, which falls on 18 September 2009."Features include a biography of Johnson (1709-1784) who "was (amongst other things) a poet, biographer, lexicographer, essayist, editor and reviewer"; listing of events in the U.S. and U.K.; and links to related websites. From the Samuel Johnson Tercentenary Committee, which consists of representatives from Johnson-related organizations. Sense Of Taste Different In Women With Anorexia Nervosa
Although anorexia nervosa is categorized as an eating disorder, it is not known whether there are alterations of the portions of the brain that regulates appetite. Now, a new study finds that women with anorexia have distinct differences in the insulta -- the specific part of the brain that is important for recognizing taste. Discovery Suggests Why Stem Cells Run Through Stop Signs
One of the mysteries of stem cells is why they continue to divide and renew themselves long after the point where other cells stop dividing. Now scientists at Northwestern University and the University of Washington have found that tiny bits of genetic material called microRNAs are necessary for stem cell division to take place, suggesting that microRNAs shut off the signals that stop cell division in most other cells. Even Older Women At High Risk Have Little Interest In Being Tested For
Few older women were interested in being tested for the virus that causes AIDS despite significant risk factors for lifetime exposure, according to a new study. The risk is especially great among African-American women, who represent 73 percent of new HIV cases in women over age 50. Presidents of the United States: Selected Images From the Collections
Collection of images of U.S. presidents from the Library of Congress Prints and Photographs Division. View images by president's name in alphabetical order or chronologically by presidential term. Also includes images of selected First Ladies. Includes details about each image, such as creator and date, and information about obtaining and using the images. From the Library of Congress. Prostate Cancer Increases Hip Fracture Risk By Eight Times In 50 To 65
Men with prostate cancer are four times more likely to suffer a hip fracture and two times more likely to suffer any kind of fracture. The hip fracture risk rises to eight times in men aged 50-65. Prostate cancer is now a leading cause of male deaths in the US and Europe. The latest study shows that the fracture risk appears shortly after diagnosis and is still pronounced in long-term survivors. Western Electric 500: The Iconic Image for All Telephones
Like Ford's Model T, the Western Electric 500 is the iconic image of a telephone in 1949, the year of its debut.
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