In a study released earlier this month, the scientists claim the world's 52,000 dams contribute more than 4 percent of the warming impact linked to human activities. The study even suggests that dams and reservoirs are the single largest source of human-cased methane, a gas that traps heat in the atmosphere.
[Link: Shaun McKinnon - AZCentral.com]
Well, that pretty much does it. All of this time I have been quietly patting myself on the back as I used all of my electrical tools and toys. I live in Seattle. Most of the electrical power in these parts comes from the massive Columbia hydroelectric system. No greenhouse contributions from me, I thought, as long as I keep my power usage electric. This article has torn a big hole in that construct. So much for electric cars and public transport as a way for Seattle to do its part for global warming. The more we understand the less we know it seems.
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