[Matt Peterson, Radha Mitchell, Rosario Dawson, Sharon Lawrence, Adrian Grenier. Photos by ANDREAS BRANCH for PMc] Adrian Grenier and Rosario Dawson were on hand at Global Green USA's 13th Annual Millennium Awards Saturday night in Santa Monica, paying tribute to the events honorees Participant Media founder Jeff Skoll, Wallis Annenberg, Marc Nathanson, and ecofabulous' Zem Joaquin.

The ceremony celebrates those who help foster Global Green USA's mission in their daily lives, in addition to fund raising for the organization's National Green Schools Initiative.

Radha Mitchell, Rosario Dawson, Sharon Lawrence

Adrian Grenier, Amy Smart

Rosario Dawson, Sharon Lawrence

Global Green Board Of Directors

Billy Zane, Luke Perry

Matt Peterson, Mark Nathanson, Pat Mitchell, Zem Joaquin, Jeff Skoll

Radha Mitchell, Davis Guggenheim