Photos: Worldchanging Book, AlexSteffen.com Time flies. It’s already been 5 years since WorldChanging: A User’s Guide to the 21st Century came out (our review can be found here ). A lot has happened since then, so Alex Steffen (pictured above, a co-founder of WC and the editor of the book) and the WorldChanging team have updated their “user’s guide for the 21st century”: Worldcha… Read the full story on TreeHugger
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The WorldChanging Book Hits Version 2.0