<strong><span class="subhead">Earth Days</span></strong></p><p>***</p><p><strong>G; 90 min.</strong></p><p>Add <em>Earth Days </em>to the growing list of perfectly serviceable eco-documentaries that aim to educate the children, inform the masses and save our Earth from human excess and global warming.</p><p>But make sure to give credit where credit is due, pal.</p><p>Directed by Robert Stone, <em>Earth Days </em>congratulates the baby boomers (who are working hard in documentaries these days to be remembered as the Really Greatest Generation) who organized the contemporary environmental movement to establish the first Earth Day in 1970.</p><p>There&rsquo;s a lot of starry-eyed nostalgia packed in these interviews, and anyone who&rsquo;s been held captive by a card-carrying member of the counterculture may sigh with exasperation. (One organizer marvels: "We did all this in a time when there was no Internet, e-mail or instant messaging.") There are also casual, but undocumented, accusations that the government bugged their telephones. Even President Richard Nixon &mdash; the man who signed the Clean Air Act into law and several other eco-friendly bills &mdash; takes some shots because, well, he&rsquo;s the generational punching bag.</p><p>Yet underneath the ego-tripping, an important story gets told and one that shouldn&rsquo;t soon be forgotten. We get the environment we deserve, and we should all be thankful to a handful of activists who persevered, against all odds, and in a time when their ideas ran contrary to the mainstream.</p><p><strong>Exclusive</strong>: Angelika Dallas</p><p>&mdash; Justin Berton, San Francisco Chronicle