350 parts per million. That’s the level of atmospheric carbon dioxide beyond which many scientists warn the earth’s climate may begin to spiral out of control. At higher concentrations, they say, heat-reflecting ice sheets will disappear and permafrost will melt, releasing vast amounts of additional greenhouse gases and driving sea levels higher in a vicious [...]
A generation ago, nearly half of all U.S. kids walked or bicycled to school. Today, less than fifteen percent do, with the majority arriving at school in private automobiles. It’s no coincidence, then, that studies show more than a quarter of San Francisco’s children are overweight. But a new program hopes to change that trend, [...]
The first Park(ing) Day was launched by Rebar in 2005, right here in San Francisco. See how San Francisco re-purposed parking spots during Friday's Park(ing) Day 2009.
Despite a blanket of fog, the last San Francisco Sunday Streets of 2009 was, from all accounts, a smashing success, one of the most popular so far, with thousands of people enjoying four activity-filled hours of pristine car-free space through Golden Gate Park and the Great Highway.
Born in the streets of Oakland, scraper bikes first gained attention as a trend in bicycle customization that spread with viral speed, thanks to YouTube. Since the Scraper Bike video debuted two years ago, they've become much more: a practical means of greening urban space, a social movement, and a rallying point for young people organizing against violence in their communities.
For two glorious Sundays, San Francisco closed streets along a stretch of its waterfront to cars – and opened them to humanity. A second "Sunday Streets San Francisco" event on September 14th reprised an August 31st street party, both of which saw thousands of people come out to run, skate, cycle, dance, or stroll their [...]