Join us and thousands of others at libraries and schools around the country to participate in this year's Citizen Science Day to help find a cure for Alzheimer's! You'll play a game on our library computers called StallCatchers, where you help to identify stalled blood flows in the brains of mice. Sound hard -- and maybe a little creepy? Well, trust us, it's not. With just a little practice you'll be identifying blood stalls with the best of them!