Word: biofueled
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...Green Metropolis, you talk about how corn grown for biofuel raises the price of corn used for food. You also say that eating locally grown food isn't practical for everyone. Locavorism as a consumption preference makes sense. Right now where I am, locally grown apples are coming up. Peach season just ended. I enjoy eating that stuff. But the environmental argument doesn't hold up. I watched a documentary about Portland, Ore., and in it there was a woman who drove her minivan 25 miles to a local farm to buy a few days' worth of produce. So that...
...electricity would need to come from renewables by 2020, but that allows for nuclear power, and many utilities would be allowed to escape the requirement altogether. "We're off to a slow start," says Peter Duprey, CEO of Acciona Energy North America, which operates wind, solar and biofuel plants. "I'm disappointed with how things have gone [under Obama...
...fossil fuels while boosting demand for American farm products. And they're "renewable," which has become a kind of synonym for green. But years ago, researchers began raising concerns about the direct emissions created by the heavy machinery and petroleum-based fertilizers it takes to grow corn and other biofuel feedstocks, the energy-intensive plants that convert the crops into fuel and the trucks that transport the fuel to market. A slew of studies have concluded that when you include all these life-cycle emissions, corn ethanol only produces about 20% fewer emissions than gasoline, although cellulosic ethanol produced from...
...even the greenest way to use biomass as a fuel. In an article published in the May 8 issue of Science, researchers from the Carnegie Institution, Stanford University and the University of California-Merced (UCM) used life-cycle analysis - which takes into account the entire impact of a biofuel from field to vehicle - to show that converting biomass to electricity (to power electric cars) produces 80% more transportation energy than turning it into ethanol (to power a flex-fuel car), with a carbon footprint that is half as small. (Bioelectricity is created the same way fossil fuel-generated electricity...
...Read "Biofuel Gone Bad: Burma's Atrophying Jatropha...