At 70 years old, Dr. Terrie Wurzbacher is walking across the United States — from sea to shining sea. Her goal? To raise awareness about veterans’ issues.

Some evidence suggests that Alzheimer's disease could actually be caused by a virus — and if that’s the case, a cure for Alzheimer’s may eventually be in store.

We’re bringing you a list of our favorite gizmos and gadgets for those 65 and up, from robotic vacuums to virtual reality goggles.