There is a lot of potential to utilize waste fat in the economy, but once we've done that, you have to move into your virgin — i.e. fuel crops. (treehugger.com)
A new study shows that degraded, marginal or abandoned land may not be very productive for growing fuel crops (scientificamerican.com)
These «second - generation» bioenergy crops are often seen as the future of bioenergy because, as perennials, they are far better at storing carbon in the soil and in their biomass than traditional fuel crops like corn and canola. (sciencemag.org)