airplane

Airplanes are bad because the pollution that the plane's engines creates is far worse then a car's engine. It is also bad because they use lots of fuel because they travel so fast for so long. They are also bad because they are so high up and when they create the pollution it goes straight up and the planes are so close to the ozone layer that it all goes up in the atmosphere and basically eats away at it. Here is an image of a plane: