I came across this info today [kind of thought-provoking]...........
>>> Transatlantic jets burn between 2.5 and 3 tons of fuel per hour. In 1988, commercial aircraft consumed an estimated 70 percent of all jet fuel (with military and business craft accounting for another 24 percent). The world's aircraft currently produce about 3 percent the carbon dioxide (CO2) gases attributed to human activity.
During takeoff, a jumbo jet can devour 2 million liters (528,344 gallons) of air per second. In the first five minutes of flight, a commercial airliner can burn as much oxygen as 49,000 acres of forest produce in a day. According to Department of Transportation figures, flying a Boeing 747-400 from Washington, DC to San Francisco burns 17,232 gallons of jet fuel. (Fuel efficiency: 6.7 mpg). A Boeing 747 averages 32 minutes taxiing, taking off and landing. During this time, it can generate 190 pounds of NOx — equal to the amount produced by driving a car 53,500 miles.
In addition to producing vapor trails that can stretch thousands of miles across the sky, jet exhaust also triggers the formation of artificial clouds by "seeding" the atmosphere with cloud-forming aerosols — droplets of sulfuric acid and particles of soot. <<<
Was anyone aware of these somewhat overwhelming stats?
It's a wonder we're all still breathing.
But, it's worth every bit of oxygen used just to watch a B747 rise skyward....Agreed???