Replacing the empty seat of Pres.-Elect Obama, Senator-appointee Roland Burris (D-IL) was sworn in by the U.S. Senate.

Scientists at NASA conducted an update on analysis of the Martian atmosphere that raises the possibility of life or geologic activity on that planet.

Navy Vice-Admiral William Gortney, commander of U.S. Naval Forces Central Command provided an operational commnader's update on counter-piracy operations in the Gulf of Aden region.

Governor Arnold Schwarzenegger (R-CA) delivered the California State of the State Address from the State Capitol in Sacramento, CA.

House Minority Leader Rep. John Boehner (R-OH) spoke to reporters on Capitol Hill to respond to the Democrats' economic stimulus plan.

Press Secretary Dana Perino and Counselor to the President Ed Gillespie conducted a daily briefing at the White House.

Senator Hillary Clinton (D-NY) delivered her farewell speech on the Senate Floor.

House Speaker Rep. Nancy Pelosi (D-CA) conducts a weekly briefing on legislative issues in the 111th Congress.

Vice President-Elect Joseph Biden delivered his farewell speech on the Senate Floor.

Dr. Denis Cortese takes a look at the Mayo Clinic & their work in healthcare. He also discuss the national healthcare system, advancements in medicine & what he sees as the most needed areas of change under the incoming Obama administration.