The purpose of this legislation, known as the Clear Skies Act, is to prohibit any form of weather modification within the United States. This includes activities aimed at artificially altering weather patterns or climate conditions. The bill aims to safeguard the environment and public health by banning practices that could have unpredictable or harmful effects on the atmosphere. Key provisions of the Act include a clear definition of weather modification, which encompasses activities such as cloud seeding and geoengineering.