# Cellulosic ethanol

### For now, forget biofuels in reserves

Ethanol as the next generation of alternative fuels has stirred significant controversy. While some tout its lower-than-gasoline greenhouse-gas emissions and its usefulness in creating carbon sinks in its agricultural fields, many other ecologists call ethanol production the most inefficient of alternative fuel options. Even the most optimistic scenarios still show that using current technologies, it can take years – in…