As can cutting down rainforests to grow sugar cane, for example. It's what scientists call bad biofuel practice. "Bad biofuels, as they are known, are exactly that," said Goodhall.

Aviation has experimented with the commercial use of biofuels in recent years, but upcoming regulatory restrictions on greenhouse gas emissions may speed up their adoption. Once airlines begin to ...

Well-known examples include the corn lobby in the United States and the rapeseed constituency in the European Union. Biofuel policies in both jurisdictions are now under pressure.

For example, convincing municipal wastewater treatment plant operators, and taxpayers, to add potentially costly technology to plants to facilitate the manufacture of biofuels may be a difficult ...

Now the energy giant Chevron says it's letting two of its large biofuel plants in the Midwest go idle, even as demand for green energy soars. For a biofuel check-in, we're joined now by Silvia Secchi.

Production of biofuels is becoming increasingly important. In this Review, Alper and Stephanopoulos describe the advantages and disadvantages of the use of native strains and engineered model ...

For example, if more acres in the American Midwest are allocated to growing corn for ethanol, this could push up the price of corn in Brazil, where farmers could expand crops into rainforest areas.