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"Energy crops and agricultural residue, like corncobs and stover, are becoming part of rural America’s energy future. Unlike the more common biofuel derived from corn, these are non-food/feed based cellulosic feedstocks, and the energy content of the biomass makes it ideal for converting to sustainable fuel.

Last January in Vonore, Tenn., DuPont Danisco Cellulosic Ethanol (DDCE) opened a new biorefinery with the goal of producing at large-scale biofuel from cellulosic feedstock, beginning with corncobs and stover and moving to switchgrass.

DDCE, along with partners University of Tennessee Biofuels Initiative, Genera Energy and the state of Tennessee are working to establish a several-thousand-acre switchgrass crop for the biorefinery."

During my lifetime, I’ve used and thrown away about 200 toothbrushes (around four per year, like my dentist has always advised). Each one, made entirely of plastic, is still sitting in a landfill somewhere. I imagine them buried like corpses in a graveyard family plot alongside all the brushes my parents, grandparents, and great grandparents used, because they’re all still there, too. Plastic toothbrushes take 500 or more years to decompose.

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