The festival at Justin Herman Plaza takes place from 11 a.m. to 2 p.m. It will feature information from dozens of eco-exhibitors, healthy and organic food samples, live music and prizes. Special passports will be handed out at the nearby Embarcadero station this morning.
The first 5,000 people who get them stamped by six exhibitors at the festival will receive a $6 BART ticket free of charge.
