Global Positioning Systems

In simpler times, maintaining good health was a matter of joining a gym or lacing up running shoes for a loop in the park.

KANSAS CITY, Mo. - The growth of cell phones with global-positioning technology is making life uncertain for the makers of personal navigational devices that help drivers figure out where they are and where to go.

WASHINGTON - Tom Dougherty jokes that he takes "get-lost walks." To his wife, Cleo, it's a constant fear: When will his Alzheimer's get bad enough that she has to end his 4-mile daily strolls? The Irvine, Calif., woman is about to watch her husband's neighborhood meandering via computer while she works.