Global aviation could be "drinking at the last chance saloon" should it
fail to resolve the vexed issue of an internationally accepted basis for
emissions trading with which to harness the industry's impact on climate
change. Raymond Cron, vice-president of the 42-member European Civil
Aviation Conference, says that while an initial meeting in February of
ICAO's specially formed Group on International Aviation and Climate Change
(GIACC) was positive, ICAO's 190 signatory states had to act now or risk
the serious consequence of being effectively overridden by international
moves to hammer out a strengthened international deal on climate change.

http://www.flightglobal.com/articles/2008/07/11/225230/industry-urged-to-reach-agreement-emissions-trading.html

Airport Footprints was recently commissioned by the European Investment Bank to advise on a new carbon assessment approach for strategic airport investment proposals in the context of European Union carbon reduction targets.

Airport Footprints recently advised the Airports Council International (ACI) on the reputational benefits of adopting a comprehensive airport carbon inventory approach. The latest ACI guidance to airports recommends that airport operators include significant components such as flights and passenger access journeys in their carbon inventories, adding that inventories without these components 'would lack public credibility'. This is entirely consistent with Airport Footprints' comprehensive Airport System model which incorporates these components.