“Turn on, Tune-in, drop out.” The words that defined a generation were uttered by Timothy Leary at the first Human Be-in 40 years ago in Golden Gate Park.

Initially planned to address the eminent issues of the decade, the original Be-In has evolved into an art/music/digital cyberculture exploration that now focuses on the latest in the GREEN movement. The 2007 theme of Biomimicry is designed to be “a launching pad for sustainability initiatives that matter.”

Happening “on Earth Day Weekend in San Francisco,” the program will include a Biomimicry Symposium, a Green Techné Exhibition, Live Performances, and DJs with Interactive Installations. All of this will be centered around the theme of Biomimicry, defined by the Biomimicry Institute as:

From bios, meaning life, and mimesis, meaning to imitate, a new science that studies nature’s best ideas and then imitates these designs and processes to solve human problems.

An example of this happens when an eco paint-designer wanting to make water-repellent paint studies a lotus flower to copy its water-repelling qualities.

Sponsored by Cyberset Music and Media with Green Century Institute and Urban Alliance for Sustainability, this year’s Digital Be-In will be held at the Mezzanine in San Francisco on April 21st. Events start at 7 and music starts at 9. For more information, see http://www.be-in.com/