Reports by the Congressional Research Service from 2008 discuss emerging policy issues regarding carbon dioxide pipelines for carbon sequestration, network needs and cost uncertainties regarding pipelines for carbon dioxide control, and jurisdictional issues in regulating carbon dioxide sequestration pipelines.
Total numbers of speakers is high: over 40 million Farsi speakers (about 60% of Iran's population); over 14 million Dari Persian speakers in Afghanistan (50% of the population according to CIA World FactBook & Britannica); and about 2 million Dari Persian speakers in Pakistan.
Although the number is changing just like any other language, the estimated number is about 175 million speakers around the world. Approximately 80 million speak it as a first language, 190 million people as a second language, and by about another 200 million people as an acquired language. French is mostly soken significantly in 54 countries around the world.