NASA human spaceflight past, present, and future : where do we go from here? : hearing before the Committee on Science, Space, and Technology, House of Representatives, One Hundred Twelfth Congress, first session, Thursday, September 22, 2011

A review of NASA's space launch system : hearing before the Committee on Science, Space, and Technology, House of Representatives, One Hundred Twelfth Congress, first session, Tuesday , July 12, 2011

An overview of the fiscal year 2012 budget proposal at the National Science Foundation and the National Institute of Standards and Technology : hearing before the Committee on Science, Space, and Technology, House of Representatives, One Hundred Twelfth Congress, first session, March 11, 2011

An overview of the fiscal year 2012 research and development budget proposals at the National Oceanic and Atmospheric Administration and the Environmental Protection Agency : hearing before the Committee on Science, Space, and Technology, House of Representatives, One Hundred Twelfth Congress, first session, March 10, 2011

The Department of Energy fiscal year 2012 research and development budget request : hearing before the Committee on Science, Space, and Technology, House of Representatives, One Hundred Twelfth Congress, first session, March 3, 2011

Out of thin air : EPA's cross-state air pollution rule : hearing before the Committee on Science, Space, and Technology, House of Representatives, One Hundred Twelfth Congress, first session, Thursday, September 15, 2011

An overview of the administration's federal research and development budget : hearing before the Committee on Science, Space, and Technology, House of Representatives, One Hundred Twelfth Congress, first session, February 17, 2011

STEM education in action : communities preparing for jobs of the future : field hearing before the Committee on Science, Space, and Technology, House of Representatives, One Hundred Twelfth Congress, first session, Monday, September 26, 2011

STEM in action : inspiring the science and engineering workforce of tomorrow : hearing before the Committee on Science, Space, and Technology, House of Representatives, One Hundred Twelfth Congress, first session, Tuesday, September 13, 2011

Examining NOAA's climate service proposal : hearing before the Committee on Science, Space, and Technology, House of Representatives, One Hundred Twelfth Congress, first session, Wednesday, June 22, 2011