The Economist, June 16th-22nd, Special Report on Air Travel

Don't miss this issue. Excerpt:

"But the impact of air travel on climate change could be even greater than such figures suggest because of other emissions by aircraft, such as nitrogen oxides (NOX), soot and water vapour, which can form condensation trails and cirrus clouds. Scinetists disagree about the exact role of some of these other emissions at high altitudes. The Stern report concluded that they might double the warming effects of the CO2.

Aircraft emissions could be limited by restricting flying. That could be achieved by imposing higher taxes because a large part of the market (mostly leisure) is price sensitive. Many environmentalists think this will become necessary. A report last year by the Environmental Change Institute at Oxford University predicted that aviation would consume such a large proportion of Britian's carbon-emissions budget that the government would have to curb groth in air travel. It acknowledged the industry's efforts to make aircraft more fuel-efficient, but was skeptical about the scope for future improvements."

See

The Economist Magazine.