The Natural Resources Defense Council has created an Aviation Biofuel
Sustainability Survey to evaluate airlines that claim to use biofuels.
The survey evaluates airlines' commitment to using sustainability
certification when sourcing fuels and their commitment to determine the
land use change caused by the biofuels they buy. It is encouraging
airlines to buy 100 percent certified fuels and to be transparent about
their fuel sources and usage.
Aviation industry takes flight on biofuels path
March 18, 2013