Rudy Giuliani

New York City Mayor Michael Bloomberg is in Copenhagen this week to take part in the Climate Summit for Mayors. Last week, the Mayor passed his Greener, Greater, Buildings Plan, and this week he hopes to inspire leaders from other cities to follow suit.

Tom Ridge became the first Secretary of the U.S. Department of Homeland Security, the agency formed in the months after the September 11 attacks. The Takeaway talks to him about his experiences in the Bush administration.