To our surprise, three of the people that were PIB-positive and had low A-beta 42 levels were clinically normal.

Our goal is to identify biomarkers, to be able to diagnose people early in the disease stage, hopefully, even before cognitive symptoms start.

In my dreams, I see 10 to 20 years from now, people who are 50 to 55 years old will get a cognitive evaluation, a PIB scan followed by a CSF test, combined with genetic markers. And the doctor will be able to tell people on an individual basis their risk for developing Alzheimer's disease.

They found a tree somewhere near you that tested positive. All the trees in a 1,900-foot radius are exposed and will show signs of lesions. By that time, they start infecting trees in another 1,900 feet.

People still have a positive perception of the zoo.

These companies, which were Europe's biggest companies, looked at their financial sheets and looked at millions of dead people, and they figured, 'Hey, we don't have to pay on any of these policies,'