According to Mary Beth Pfeiffer, author of Lyme: The First Epidenic of Climate Change , the blacklegged tick and the bacteria that causes Lyme disease, Borrelia Burgdorferi , deserve our respect. "The ticks have amazing abilities. First of all, they wait forever on a little blade of grass, and there are so many out there that sooner or later one or two of them is going to get lucky and a mammal or a person will pass by. From 50' away, that tick can sense your breath--the carbon dioxide in your