Precipitation Precipitation In meteorology, precipitation is any product of the condensation of atmospheric water vapor that falls under gravity. The main forms of precipitation include drizzle, rain, sleet, snow, graupel and hail. Precipitation occurs when a portion of the atmosphere becomes saturated with water vapor, so that the water condenses and "precipitates". Thus, fog and mist are not precipitation but suspensions, because the water vapor does not condense sufficiently to precipitate. Two processes, possibly acting together, can lead to air becoming saturated: cooling the air or adding water vapor to the air. Precipitation forms as smaller droplets coalesce via collision with
What Have They Done to the Rain What Have They Done to the Rain "What Have They Done to the Rain" is a song by Malvina Reynolds. Composed in 1962 and first entitled "Rain Song", it was written as part of a campaign to stop nuclear testing in the atmosphere, which was producing fall-out. The song was recorded by The Searchers, reaching number 29 on the U.S. charts and number 13 in the UK in 1965. It has been recorded by many other artists including Esther & Abi Ofarim (1965), who also recorded a version in French 'Tout est étrange sous la pluie' the same year. The