Al Gore, seen here in February, said his Live Earth concerts would launch a multi-year campaign to combat global warming. ((CBC))

Musician Bob Geldof, who organized the Live Aid concerts for famine relief and the Live 8 events for debt forgiveness, has criticized Al Gore's Live Earth music shows, saying they will do little to combat global warming.

The former frontman for the Irish band The Boomtown Rats has spent much of his life advocating on behalf of the world's poor and other humanitarian causes. Hespearheaded the 1985 Live Aid concerts to benefit the victims of the Ethiopian famine and went at it again in 2005 with Live 8 for African debt relief.

Geldof, while wishing Gore success in his venture, said a pop concert wasn't going to help the environment, because— unlike his former causes— the public is already very conscious of the perils of global warming.

"Why is [Gore] actually organizing them? To make us aware of the greenhouse effect? Everybody's known about that problem for years. We are all [expletive] conscious of global warming," Geldof said in an the interview published Saturday by De Volkskrant.

"I would only organize [Live Earth] if I could go on stage and announce concrete environmental measures from the American presidential candidates, Congress or major corporations," Geldof said.

"They haven't got those guarantees, so it's just an enormous pop concert."

Gore, who stars inthe Oscar-winning documentary An Inconvenient Truth (based on his book of the same name), has said the Live Earth concerts would launch a multi-year campaign to fight global warming. Theformer U.S. vice-presidentalso said the profits would be farmed back into a yet-to-be announced foundation he was setting up.

'Sounds like Live 8'

The 55-year-old entrepreneur, who runs his own media empire, also criticized Gore for using the world "Live" in his concerts.

"It sounds like Live 8. We're getting lots of response from people who think we are organizing it."

Gore announced in February a set of concerts to beheld on July 7 in London, New York, Tokyo, Shanghai, Johannesburg, Sydney and Rio de Janeiro.

Hewas in Rio over the weekend promoting the event: "I want to invite every person who cares about the environment in Brazil to come to the event."

Some of the biggest music acts have signed on, including Kanye West, Snoop Dog, The Police, Bon Jovi, Sheryl Crow, Beastie Boys, Black Eyed Peas, Madonna and Smashing Pumpkins.

The concerts will be broadcast on 120 networks around the world and streamed live online.

With files from the Associated Press