抖阴ap

Passengers flying out of Denver International Airport each contribute up to a ton of heat-trapping carbon dioxide before reaching their destinations as airplanes burn fossil fuels. But those tens of millions of passengers in the future could fly without worsening climate warming if the oil-based fuels are replaced with new fuels being developed at the National Renewable Energy Lab in Golden. The new aviation fuels are made from a widening variety of plant and other materials — including municipal and industrial waste, algae and corn crop residues — that don鈥檛 require drilling for new oil.