2008 Democratic National Convention: Day 4(Al Gore)
Former U.S. Vice President Al Gore speaks on day four of the Democratic National Convention (DNC) at Invesco Field at Mile High August 28, 2008 in Denver, Colorado. U.S. Sen. Barack Obama (D-IL) is the first African-American to be officially nominated as a candidate for U.S. president by a major party.
( - Photo by John Moore/Getty Images North America)











