The re-formed Eurythmics have announced a world tour beginning in October with all proceeds benefiting the environmental group Greenpeace and the human-rights organization Amnesty International.

One of the most successful groups of the 1980s, the synth-pop duo — singer Annie Lennox and producer/guitarist Dave Stewart — also announced the name and release date of their first studio album in a decade. The 11-track Peace is due Oct. 19.

The group performed its first show in support of the new LP on July 5 from the deck of the Greenpeace ship "Rainbow Warrior" in London.

"As we look to the millennium and beyond, more and more people are questioning what the 21st century will hold for them," the duo wrote in a message on the tour's official website (www.peacetour.net).

Lennox and Stewart explained they are donating the outing's proceeds to the two charities — an extremely rare show of largess — because, "Many of us are looking for a positive way where we can act and join together, to create a more peaceful future. A future where we strive to work more in harmony with each other and the planet ... not in opposition.

"To achieve this, for the first time we have brought together two of the world's most globally influential organizations — Greenpeace and Amnesty International, defenders of the environment and human rights, who offer solutions for the future. Together they embrace the needs of mankind and the environment."

Greenpeace has received support from rock artists in the past, including a 1993 benefit album, Alternative NRG, which featured R.E.M., U2 and Annie Lennox. The group has also received donations of a portion of an album or tour's proceeds. However, a spokesperson for the organization said the donation of all profits from the Eurythmics' Peace tour is an unexpected boon.

"We've done lots of collaborations like this, but I'm not aware of one that was quite this generous," Craig Culp, media coordinator for Greenpeace U.S.A., said.

Culp said the proceeds, which he expected would be "substantial," will aid the organization's work against genetically modified foods as well as its efforts to fight the effects of global warming. The link between the band and the environmental organization came earlier this year, when Stewart asked a UK Greenpeace recruiter how he could get a Greenpeace jacket, leading Stewart to inquire further into the organization's activities, Culp said.

Meanwhile, Lennox and Stewart have been busy preparing the groundwork for Peace. They directed the video for the single "17 Again," which precedes the release of the LP in the U.S.

They also are slated to direct the first video for their European single, the swaying, string-laden ballad "I Saved the World Today."

The new album — the first studio effort from the Eurythmics since 1989's We Two Are One — was written by Lennox and Stewart and recorded between February and May in London at the Church studio, the site of many of their '80s sessions.

"I Saved the World Today" features Lennox's signature upper-register vocals. Over a symphonic background, she sings "Hey, hey I saved the world today/ And everybody's happy now the bad thing's gone away/ And everybody's happy now the good thing's here to stay."

Aside from a performance on the Sept. 26 "Saturday Night Live" 25th anniversary show, the only U.S. dates currently slated for the band are a Nov. 4 show at the Staples Center in Los Angeles and a Nov. 9 gig at Madison Square Garden in New York, according to a source at the band's 19 Management who requested anonymity. The group will perform the midtempo "17 Again" on the "SNL" special.

Lennox and Stewart first announced plans to work together again at the Brit Awards (England's equivalent of the Grammys) on Feb. 16. They were honored that night for their "Outstanding Contribution to British Music." It was their 11th Brit award, the most ever won by a group.

Formed out of the ashes of Lennox and Stewart's late-'70s post-punk band, the Tourists, the classically trained musicians and onetime lovers burst onto the world scene in 1983 with their second album, Sweet Dreams (Are Made of This).

The album's title track (RealAudio excerpt) — along with an arresting video in which Lennox blurred gender lines in a man's suit and a bright orange buzz cut — became a worldwide hit and catapulted the pair beyond the ranks of their synth-pop counterparts.

Following the 1989 release of We Too Are One, the group went on hiatus and Lennox released a 1992 double-platinum solo album, Diva. Meanwhile, Stewart sporadically released solo albums and continued producing a variety of acts, from rocker Tom Petty to Australian pop sensation Natalie Imbruglia.

The full track listing for Peace is: "17 Again," "I Saved the World Today," "Power to the Meek," "Beautiful Child," "Anything but Strong," "Peace Is Just a Word," "I've Tried Everything," "I Want It All," "My True Love," "Forever" and "Lifted."