CNN

Gore again said Thursday he has no plans to run for president.

NEW YORK (CNN) - Former Vice President Al Gore repeated Thursday that he is not - and has no intentions to - ever run for a political office again.

"I don't have any plans or intentions to be a candidate again and really the main reason is, I'm involved in a different kind of campaign - to try to raise awareness of what I truly believe is the most serious crisis our civilization has ever faced," Gore told NBC's "Today Show," referring to global warming.

The former vice president and one-time presidential candidate was on the program to discuss Saturday's "Live Earth" concerts that will be broadcast by NBC.

The event is a "24-hour, 7-continent concert series taking place on 7/7/07 that will bring together more than 100 music artists and 2 billion people to trigger a global movement to solve the climate crisis," according to the Live Earth Web site.

When asked why he wouldn't run for president again, when presumably a president could shape an agenda to fight global warming, Gore said that even the president and Congress needed the support of the American people to make it work.

"The key players are the American people," he said. "When the American people have the awareness of what this means for their children, and for their grandchildren, that all of civilization is at risk here, then they will demand that whoever is running for office, whoever is elected to serve, will have to respond to this."

"I've kind of fallen out of love with politics. I really want to focus my attention and energy, whatever experience and talents I've gained over the years - I think it may well be that the highest and best use of that is to try to bring enough awareness of the solutions to the climate crisis and enough of a sense of urgency that we come together across party lines on behalf of our children," Gore added.

He refused to endorse any of the current field of candidates, noting that the election is 500 days away.