
David Cameron sums up the changes in medicine in the last 50 years. One big revolution is doing internet "homework" before going to the doctor. The result? People ask their doctors more questions with greater confidence.

An impressive roster heads the new Alzheimer's Study Group aiming to overcome Alzheimer's. It includes Sandra Day O'Connor, doubly driven by her husband's 17 years with Alzheimer's, and the memory of Ronald Reagan, who nominated her to the Supreme Court.