Iowa Farmers Harvest Stover For POET Project Liberty
Could be the nation's first cellulosic ethanol plant
Each fall in corn country, big combines prowl through the fields, stripping the valuable kernels from ears and spitting out bits of cornstalk, leaves and empty cobs.
The residue, which used to lie on the ground and rot, has become a money crop for the next generation of biofuel.
For the full story, click here.
