Guardian: The US Navy on Wednesday launched its first carrier strike group powered partly by biofuel a mix made from beef fat, calling it a milestone toward easing the militarys reliance on foreign oil.
The maritime branch touted the warships as the centrepiece of its Great Green Fleet part of a Navy-wide initiative that aims to draw 50% of its power from alternative energy in four years.
For now, the mix fueling the ships is only 10% biofuels and 90% petroleum. The Navy originally aimed for a 50-50...