Bio-debatable: Food vs. fuel

Amid a global food crisis, some wonder: Is the production of biofuels robbing from dinner plates?
The number of Northwest cars and trucks bumper stickered with "Biodiesel: Mother Nature Approved" or "I love the smell of biodiesel in the morning" and even "Ethanol: No war required" has blossomed in recent years.
But with growing fears over biofuels stealing from dinner plates to fill gas tanks, people are starting to wonder: How green are biofuels?
The concerns are not only about traditional food crops such as corn being diverted to ethanol. Critics say the use of foreign-grown palm oil and soybeans as a biofuel source leads to the destruction of precious rain forests. And the very act of producing certain biofuels generates greenhouse gases that contribute to climate change -- although generally in lesser amounts than fossil fuels. ...