small change finery

Most people have either watched or been aware of the movie Wall-e. It was a a cute film, set way into the future, concerning the adventures of the little robot that has been left behind in the world to up the mess put aside by humans. The humans are living in space when they wait for the earth being re-habitable to allow them to all return. Wall-e meets another robot called EVE, who may have been shipped to earth to hunt out any indications of new life (growing plants), falls in love and follows her into space where they're involved with a lot of antics before Wall-e eventually returns to earth with EVE, the humans follow and they also set about so that it is a great location to live again. The fine particles are mostly made from gases. There are four major origins for that gases which are responsible for these particles: rock (vaporized during combustion or casting), carbon from combustion, organic carbon, sulfates and nitrates. Take sulphur dioxide. It is created during engine combustion, but when it climbs into the atmosphere and mixes with rain it will become sulphuric acid. We all probably know very well what that will do- since it is highly corrosive and dangerous in concentration.