Are you interested in both aviation and the environment? If so, you might be very interested in what's going on in commercial aviation these days.
Aircraft manufacturers are becoming more environmentally-conscious, or "green," as the expression goes. Boeing and Airbus, as well as other manufacturers, are working to reduce the environmental impact of flying, as well as the cost.
Inside Boeing's exhibit at this year's big Farnborough Airshow in the UK, sits a 75-gallon tank of bright geen algae -- the potential feeding ground for a jet fuel substitute. The algae doubles in size every 24 hours, says the company. (By the way, in case you're wondering, corn-based ethanol is not being considered, because it freezes at high altitudes, nor does it provide the power a jet needs).
Boeing is conducting laboratory tests with four airlines (Virgin Atlantic, Japan Air Lines, Air New Zealand and Continental) to see what may work best as an alternative fuel.
New fuels are not all that's going on. Engines are an important element also; they can be the source of fuel economy improvements and also reductions in carbon emissions. General Electric, a major manufacturer of commercial aircraft engines, is showing a new, more environmentally-friendly engine, to be ready in less than eight years. Another major engine manufacturer, Pratt & Whitney has a new geared-turbo fan that could be the wave of the future. It uses less fuel, generates less heat and noise and releases less nitrogen oxide than other engines.
The aviation industry is also moving away from traditional metals, such as aluminum and steel, to metals such as titanium and plastic composites made from carbon fiber.
These are not cheap or easy solutions. Lighter materials, new fuels and many other innovations promise to make aircraft more environmentally friendly.
This is a very exciting time for aviation -- whether you want to be a pilot or an airline dispatcher.

