News about environmental issues relating to aircraft operations, including noise issues, emissisions, and regulations. See Fuel for biofuel.

U.S. states such as Washington have been trying to establish biofuels centers of excellence but now their efforts may be undermined by the U.S. government.
Jun 25, 2012 - 1:10 PM
The proposed restrictions on the U.S. military buying biofuels could stunt the country's emerging leadership in this technology.
Jun 14, 2012 - 3:25 PM
Jun 4, 2012 - 3:50 AM
May 29, 2012 - 4:25 PM