While biofuels are certainly not new to the market, recently there is growing debate about both the cost and environmental benefits of fuels like biodiesel and ethanol. However, arguments on both sides tend to lump all biofuels together when making their case for or against. The fact is, not all biofuels are created equal, nor do all of them have the same benefits and costs. A large percentage of biofuels are made from crops that are important food staples (like corn, sugarcane, and cassava), or from commodities produced on farmland usually designated for food. With global food shortages and ever-rising food prices, there is on-going debate about the economic and environmental benefits of biofuels, and whether they are a sustainable alternative to petroleum fuels.