Biofuels From What?
If cows could fly: What's in United Airlines' biofuel?
Lloyd Alter, March 16, 2016 (Treehugger)
“…[United Airlines is powering scheduled flights with biofuels made by AltAir Paramount, which] converts sustainable feedstocks, like non-edible natural oils and agricultural wastes, into low-carbon, renewable jet fuel…[T]he AltAir plant makes its fuel from beef tallow and pig fat, which are not considered edible oils….[The US Navy made a big deal of an order from AltAir, noting...[that it is part of] a secure, clean energy future, where both defense and commercial transportation can be fueled by our own hardworking farmers and ranchers, reduce landfill waste and bring manufacturing jobs back to rural America…From the carbon dioxide perspective, these fuels are identical…[but the synthetic or renewable jet fuel is produced] without actually pulling additional carbon molecules out of the ground…[But given] the impact that raising cattle has, from its use of land and water to the carbon emitted raising it, I suspect that a lot of people would look less favorably at United’s initiative if they knew they were flying on beef tallow…” click here for more