Doctors have long suspected that head trauma boosts the risk of getting Alzheimer's disease later on, but the evidence on that has been mixed.
But it looks like people who have memory problems and a history of concussion are more likely to have a buildup of plaques in the brain that are a risk factor for Alzheimer's, according to researchers at the Mayo Clinic.
Though hackers did obtain "strongly encrypted PIN data" when they got into Target's information systems, the retailer said Friday that sensitive information from customers' debit cards should not be at risk.
Originally published on Fri December 27, 2013 1:51 pm
A federal judge has ruled that the National Security Agency's bulk gathering of the telephone records of millions of Americans is legal — less than two weeks after another federal judge ruled that the program violated the Constitution.
"The globe of Saturn, seen here in natural color, is reminiscent of a holiday ornament in this wide-angle view from NASA's Cassini spacecraft. The characteristic hexagonal shape of Saturn's northern jet stream, somewhat yellow here, is visible. At the pole lies a Saturnian version of a high-speed hurricane, eye and all. ...