Former U.S. President Bill Clinton greeted President Obama onstage at the Clinton Global Initiative in New York City on Tuesday with a hearty handshake and a few jokes. Obama then went on to offer Clinton's daughter Chelsea his presidential motorcade to use should she go into labor.
World leaders, activists and protesters have converged in New York City this week for the 69th Session of the United Nations General Assembly. This year's event has highlighted the problem of global warming and the need for countries to strive to reduce greenhouse gas emissions.

