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"Hydro-electric dams can often cause significant damage to the environment by releasing methane into the atmosphere. Bacteria break down organic matter on the bottom of lakes and reservoirs, producing the natural gas. When intake pipes for"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/clean-water/burning-methane-could-improve-hydro-electric-power.html>