Deadly smog, piles of burning garbage, no recycling - on the first Earth Day in 1970, the Bay Area looked vastly different than it does today. But much of the progress since then is thanks to a small, but dedicated group of everyday Bay Area residents who decided it was time for a change. This Earth Day, QUEST meets the local environmental heroes who preserved the Bay Area's water, air and open space for generations to come, and looks ahead to the environmental challenges that are yet to be solved.
Who are your SF Bay environmental heroes? Let us know in your comments below.