The world's energy needs are going to require a lot of sources to power the future. Ethanol has been widely used as a fuel additive in the United States, and currently makes up 10% (or in some cases more) of almost all of the gasoline sold nationwide. Considering that more than 130 billion gallons of gasoline are sold annually in the U.S., that's a lot of ethanol.
However, there are definite questions as to ethanol's viability both in the short and long term. With that in mind, we asked two of our energy experts, Travis Hoium and Jason Hall, for their thoughts on ethanol. Here's what they had to say.