High Quality Content by WIKIPEDIA articles! The United States President`s Council of Advisors on Science and Technology (PCAST) is a council, chartered (or re-chartered) in each administration with a broad mandate to advise the President on science and technology. The current PCAST was established by Executive Order 13226 on September 30, 2001, by President George W. Bush, and was most recently re-chartered by President Obama`s April 21, 2010, Executive Order 13539.