03-24-12, 09:52 AM | #1 |
Supreme EcoRenovator
Join Date: Mar 2009
Location: Portland, OR
Posts: 4,004
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Photo of Chernobyl Tree Rings...
Pine trees reveal changes in wood color, density, and growth rate following irradiation from the Chernobyl disaster. T.A. Mousseau, University of South Carolina (2009) -AC
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I'm not an HVAC technician. In fact, I'm barely even a hacker... |
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