With weather disasters lined up like airliners on final to LaGuardia, news on climate change is a constant. And with aviation the most energy intensive form of mass transportation, it's in the cross hairs as an emitter of greenhouse gas. In this video, AVweb's Paul Bertorelli examines the role of electric airplanes and, more importantly, sustainable aviation fuel. Bottom line: Don't expect miracles.

Correction: At 10:05, the title should be a gallon of fuel (6.7 lbs) to a pound.