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" Spent a day last week visiting a farm that&amp;#039;s converting cow manure into methane gas into electricity. They&amp;#039;re making a good bit of power; enough to light up about 300 homes.  Methane digesters are nothing new, but it was new to me, and pretty amazing. It also makes you wonder how many ways we might be able to create electricity and other energy sources. Of course, it all hinges on a method&amp;#039;s EROEI (energy return on energy invested). Cow poop is a good one, because those cows are being fed anyway as part of the milk-making process. It&amp;#039;d likely be a losing proposition to simply feed and house cattle for the purposes of electricity generation.  In other news, I&amp;#039;m really intrigued by the new Tesla electric car (www.teslamotors.com). The 0-60 in 4 seconds is pretty nifty; even more-nifty is the claimed 250-mile range. If it can really do that, we&amp;#039;re getting somewhere. With all the power we&amp;#039;re making with our new Evergreen Solar/Southwest Windpower/Wattsun/Outback Power system, we could probably charge one of those Tesla&amp;#039;s. Too bad they cost $85k. "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.popularmechanics.com/science/energy/a776/3513021/>