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.
Persian, also known as Farsi, is the country's official tongue and a member of the Indo-European language family. Persian is also the favorite language of one the few people who has real authority when it comes to comparing languages: 17-year-old Tim Doner. A famous hyperpolyglot, which means someone who can speak many languages, Doner says he knows 23. He recently appeared on an Australian morning news program, where the hosts asked him to pick his favorite, and he selected Persian without hesitation.