Looking back one, two, and five years ago today (give or take) on Worldchanging:

2009
No Impact Man (the movie): A Sneak Peek
Sean Conroe introduces the trailer to the new movie "No Impact Man"...

2008
Cities are for People: The Limits of Localism
Adam Stein writes about the limits of vertical farming and the corresponding limits of localism, and about cities and what they are good for...

2005
Ethiopia Lives
Jamais Cascio reports on the "Ethiopia Lives" project, which gives nineteen Ethiopians digital cameras to record the people, moments, and places important to them and then share them with the rest of the world over the internet...

Other recent "look backs":
August 4
August 5
August 6