German scientists create usable foam from tree bark

Germany is known for its cutting-edge policies on green issues, and its drive towards a clean economy. One of its latest eco-breakthroughs comes from the University of Freiburg's Biofoambark project. Researchers there are trying to green up the insulation foam used in construction, by replacing its petroleum-based ingredients with a naturally-occurring compound that ordinarily goes to waste in the lumber industry.

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