FILM: The International Council of Thirteen Indigenous Grandmothers, which consists of women from all four corners of the world who joined together out of concern for the planet, will be honored tonight with The Courage Of Conscience Award And Film Screening of For the Next 7 Generations. The documentary about this unique alliance took four years to make and was shot on location in the Amazon rain forest, the mountains of Mexico, and at a private meeting with the Dalai Lama in India. There will be a reception preceding the film screening and award ceremony.

5 to 9:30 p.m. // Grace Cathedral (1100 California St) // free (donations accepted)

TALK: Ray Anderson, one of Time magazine's "heroes of the environment" and former co-chair of the President's Council on Sustainable Development, will discuss the future of sustainability in his lecture, Carbon Footprint Zero. Anderson's leading business model for sustainable works transformed emission rates from 10,447 tons of solid waste, 605.3 million gallons of contaminated water, 704 tons of toxic gases and 62,800 tons of carbon dioxide a year to zero emissions.

6 p.m. // The Commonwealth Club (595 Market Street, 2nd Fl) // $7-18