Credit John B. Carnett / Popular Science via Getty Images
The current case of a prominent Chinese activist seeking U.S. protection has echoes of a similar episode in 1989. Then, physicist Fang Lizhi took refuge at the U.S. Embassy in Beijing. He spent a year there before the U.S. and China reached a deal allowing him to move to the U.S. He died this month in Arizona, at age 76.
Karen Lindsfor, a professor of radiology and chief of breast imaging at the University of California, Davis Medical Center, examines the mammogram of a patient with heterogeneously dense breast tissue. Lindfors is among those doctors who say there was insufficient evidence to support the idea that additional screenings would detect cancers earlier.
Should women in their 40s routinely get mammograms to detect breast cancer?
Two studies released Monday aim to help resolve that question, which is one of the most intense debates in women's health. The studies identify which women in their 40s are most likely to benefit from routine mammograms.
For years, the mantra was that regular mammograms save lives. So many people were stunned in 2009 when an influential panel of experts questioned that assumption.
Originally published on Mon April 30, 2012 4:03 pm
Today is International Jazz Day, as decreed by Herbie Hancock and UNESCO. The centerpiece events are two all-star concerts, held at sunrise and sunset. The sunrise show was held in Congo Square in New Orleans, seemingly a nod to the dawn of jazz. Tonight's evening program takes the "international" part of International Jazz Day quite literally: