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We need to follow Brazil's lead by switching aircraft over to ethanol, which is 106 octane ( www.AlcoholCanBeAGas.com ). This could be used in our aircraft easily, just like they already do in Brazil. Fuel can be produced for about $1.00 / gallon from any plant material waste, like grass clippings, mesquite seed pods, or cattails (up to 10,000 gallons / acre!). There is even a compact unit ( www.MicroFueler.com ) about the size of a refridgerator, that produces 35 gallons of ethanol ever 3 days automatically, with only a water hose and power connection, bulk sugar, and yeast. Not only can it power internal combustion engines up to 18:1 compression ratios without pinging. It can also power turbine engines with almost zero pollution, it actually cleans the air! Since ethanol already contains oxygen, fuel consumption decreases above 12,000' over avgas, with a power increase. Dragsters and race cars have used alcohol for years for the increased octane (pinging) and safety factor. Gasoline has fumes that spread out on the ground that are very explosive, alcohol evaporates safely into the atmosphere. Gasoline flames up when hit with water, alcohol is dilluted and flames go out immeadiately. Boaters use alcohol stoves to prevent explosive fumes in their bilges. The astronaut Gordon Cooper, once flew an unmodified NASA T-38 from Indianapolis to Houston when he was called back on an emergency to substitute for the Apollo 10 Commander. Jet fuel was unavailable, so he called the race track to deliver him alcohol to fly his jet back.