While we are on the subject of dust, here are some dust fun facts from The Encyclopedia of Trivia
During Kim Il-Sung's reign in North Korea, people went to prison for letting dust collect on his portrait.
About 27 tons of dust rains down on the earth each day from space, making a total of almost 10,000 tons each year.
Most dust particles in your house are made from dead skin.
Up to 15,000 dust mites can thrive in just one gram of dust.
Lunar dust is actually composed of tiny bits of glass that will kill a human if they are exposed for too long.