The international aviation industry has committed to “carbon neutral
growth” by 2020, which would allow the sector to grow as long as it
doesn't increase its carbon footprint. To help the sector reduce its
impacts, the industry wants nations to modernize traffic management,
give it unlimited access to carbon offsets to meet its emissions
reduction goals, and regulate and impose price ceilings on carbon
markets. It has set a target of increasing biofuels use to 10 percent of
all consumption by 2017.  Several airlines have conducted biofuels test
flights for more than a year, beginning with a February 2008 Virgin
Airlines flight where one engine used fuel made from coconuts and
Brazilian babassu nuts.