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How Exercise And Other Activities Beat Back Dementia

"What's good for the heart is good for the brain," one neuroscientist says. In addition to physical exercise, researchers say that mental exercise, socializing and a good diet can also help preserve memory in older brains.

Inside The Brains Of People Over 80 With Exceptional Memory

Research into why some people have strong memory well into old age suggests that their brains are different from their peers. Some parts of the brains of "superagers" responsible for attention, thinking and memory seem to be spared the typical age-related shrinkage.

China Reports 13 Bird Flu Deaths; Cases Climb To 60

Health officials in China say they've confirmed 11 new bird flu diagnoses, bringing the number of H7N9 infections to 60, according to the official Xinhua news agency. The virus, which began in eastern China, has now sickened at least one person in Beijing, and two in the central province of Henan.

Scientists Race To Stay Ahead Of New Bird Flu Virus

"The top priority is diagnosis — the capability to be able to pick up this virus, should it emerge outside of China," says virologist John McCauley. Flu researchers are getting started on creating a vaccine, but there are still many unknowns.

Wait For Obamacare Price Tags Could Last Months

In many states the deadlines for companies to file their insurance for sale on new exchanges aren't until late May. Some states with early deadlines have no plans to disclose the rates anytime soon.