Looking back one, two and five years ago today on Worldchanging:

2009
San Francisco Carves a Park from the Midst of Its Pavement
Streetfilms presents a short video on the transformation of a San Francisco street into a public plaza...

2008
Recovery Parks, Free Geeks and Plasma: Vancouver Debates Zero Waste
Julia Levitt wonders if we can imagine a day when, having sorted out our recyclables and compost-ables, then responsibly earmarked our "still perfectly good" stuff for reuse, we'll have no trash left to drag to the curb? What are the solutions that will take the developed world from our current rates of over-consumption to zero waste? Julia reports on how Vancouver BC is grappling with these questions...

2005
Serge de Gheldere: Homage to Patagonia
More than a decade ago, Patagonia, an outdoors clothing company, decided to become a transformer instead of transmitter, and took a good look at themselves. Since then Patagonia has gone on to become the archetypical Natural Capitalist company by instilling sustainability in all aspects of its business...

Other recent "look backs":
June 28
June 29
June 30