biofuel

Researchers at the University of Nevada, Reno, have received a $9 million grant from the U.S. Department of Energy to study an unlikely candidate for future fuels: cactus pear.

This spring, the Eagle County Regional Airport near Vail, Colorado, began offering the fatty jet fuel sourced from unwanted livestock tallow. It's a so-called sustainable aviation fuel with a lower carbon footprint.

The Obama administration wants states to cut back on carbon emissions, but doing that has always been a thorny problem. While carbon is a byproduct of…

What if the vast stands of beetle-killed trees in the west could be turned into gasoline? A recently-announced federal project involving several…