President Barack Obama has met with former Vice President Al Gore at the White House as the president prepares for his appearance at a major international climate summit in Copenhagen.
Obama met with Gore in a closed meeting with no press coverage.
The former vice president won the Nobel Peace Prize in 2007 for his work toward combatting climate change.
Obama is also meeting on Wednesday with environmental leaders and U.S. business leaders to discuss climate change.
The president will be at the summit of world leaders on Dec. 18.