The Air Transport World-Leeham Co. Eco-Aviation Conference last week produced a great deal of news, most notably the test results from Air New Zealand on its biofuel test flight made in cooperation with Boeing and Rolls-Royce.
ANZ announced at the conference that the test flight had a 1.2% better fuel efficiency than Jet-A fuel but a whopping 60%+ reduction in CO2 emissions.
A listing of news articles that came out of the conference may be found on our Eco-Aviation page here.
If biofuel proponents claim a 60% reduction in overall CO2 emissions, they should have a look at the overall balances in nitrous oxides and methane as well. Both have a far more detrimental effect to global warming than CO2.