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"\nThis week on TreeHugger Radio: Creative and groundbreaking solutions to global problems are everywhere. We look at a flight of stairs that gathers energy from busy feet, and algae cultures that eat emissions from power plants to make green fuel. We also"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/treehugger-radio/treehugger-radio-architecture-for-humanityatms-open-source-architecture-movement-green-energy-from-busy-feet-and-microorganisms.html>