Particles Are Tiny, but Damage Can Be Great: “From the coal dust that causes black lung

disease to the bacteria-laden droplets that

spread Legionnaires’ disease to second-

hand cigarette smoke and plain old air

pollution, particles from about 0.05

microns to 10 or 20 microns in size have

long been at the focus of (environmental) scientists’

attention…

Those tiny particles crop up in environmental science and germ weaponry

for virtually identical reasons.: NY Times [“FMHreader”, “FMHreader”]