steve@sfbg.com

GREEN CITY When the clock or the calendar hits 420 — and particularly at that magical moment of 4:20 p.m. on April 20 — the air of Northern California fills with the fragrant smell of green buds being set ablaze. But this year, some longtime cannabis advocates are trying to focus the public's attention on images other than stoners getting high.Read more »

culture@sfbg.com

URBAN FARMING Green thumbs may soon be mourning the partial removal of Hayes Valley Farm. The urban agriculture education project is facing the prospect of condos being built on one of its two sections of city-issued property by Bay Area development company Build Inc., as early as February 2012. The company has been slated to build on the property since before the farm project began in January 2010, but was delayed by the recession of 2008 and its wet-blanket effects on new construction projects.Read more »

caitlin@sfbg.comRead more »

culture@sfbg.com

A smattering of the phenomenal sustainability people and places you can plug into around the Bay.

Green your homeRead more »

rebeccab@sfbg.com ; caitlin@sfbg.com

GREEN ISSUE Planting indigo seedlings in a leaky greenhouse in the mist of a cold Marin County afternoon, Rebecca Burgess thinks about what she's going to wear. She's not a fashion model, or a clotheshorse, but she is on a yearlong quest to attire herself only in garments that were sourced and produced bio-regionally — or within a 150-mile radius of home — an area she calls her local fibershed.Read more »

rebeccab@sfbg.com

GREEN ISSUE California is often viewed as being among the brightest shades of green. The Golden State's landmark climate-change legislation has proven magnetic for green-tech startups, while Northern California is defined in part by its longstanding love affair with natural foods and solar power. San Francisco boasts a well-used network of bike routes, a ban on plastic bags, mandated composting of kitchen scraps, and a host of urban agriculture projects.Read more »

news@sfbg.com

1892: The Sierra Club is established by John Muir and a group of professors from UC Berkeley and Stanford in San Francisco. In its first conservation campaign, the club leads efforts to defeat a proposed reduction in the boundaries of Yosemite National Park.Read more »

sarah@sfbg.com

GREEN ISSUE For the past two summers, scientists and environmentalists with Project Kaisei, a Sausalito nonprofit focused on increasing public awareness of marine debris, have sailed out under the Golden Gate Bridge to survey trash in the North Pacific gyre.Read more »

UPDATE! In the print version of this article, this reporter inadvertently described Anthidium maculosum as a territorial leafcutter bee. It is in fact a wool carder bee. My humble apologies to the bees and the experts who helped identify them.

Sarah@sfbg.com

GREEN This summer, I hunted squash bees. The hunt began on a sunny mid-July afternoon at the home of Celeste Ets-Hokin, an advocate for native bees who lives in Oakland and has just published a 2011 calendar on the importance of conserving bee habitats.Read more »