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| | Aquaponics: A Locavore's Fish Farm? (worldchanging.com) | | 15 points by ph0rque on July 17, 2009 | past | 1 comment | |
| | The Roots of Resistance 2: Moral Filters (worldchanging.com) | | 1 point by zzkt on July 2, 2009 | past | |
| | The Roots of Resistance 1: Battling Agents (worldchanging.com) | | 1 point by zzkt on July 2, 2009 | past | |
| | Special Innovation Zone: Imagination Without Regulation (worldchanging.com) | | 2 points by kqr2 on June 26, 2009 | past | |
| | MPedigree: Detecting Counterfeit Drugs in Third World Countries (worldchanging.com) | | 1 point by kqr2 on June 9, 2009 | past | |
| | China Puts Its Faith In Solar Power With Huge Renewable Energy Investment (worldchanging.com) | | 1 point by ph0rque on May 29, 2009 | past | |
| | I (worldchanging author) Predict U.S. Carbon Dioxide Emissions Peaked In 2007 (worldchanging.com) | | 1 point by ph0rque on May 14, 2009 | past | |
| | Bruce Sterling: The Last Viridian Note (worldchanging.com) | | 5 points by bootload on Dec 2, 2008 | past | 1 comment | |
| | Fewer Roads, Less Congestion (worldchanging.com) | | 15 points by bootload on Nov 4, 2008 | past | 5 comments | |
| | Imagine... (a slew of startup ideas in the spirit of PG's "being good") (worldchanging.com) | | 2 points by ph0rque on July 18, 2008 | past | 1 comment | |
| | If the ruins of the unsustainable are the new frontier... (worldchanging.com) | | 8 points by fartron on July 14, 2008 | past | |
| | Grad Student Accidently Discovers Ultra-efficient White-Light LED (worldchanging.com) | | 4 points by nickb on May 27, 2008 | past | 3 comments | |
| | Social Networks threaten Friendship? (worldchanging.com) | | 2 points by eastsidegringo on April 3, 2008 | past | |
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