How do airplanes harm the environment?

The engines of an airplane work by burning fossil fuel (combustion). This produces carbon dioxide and water vapour. read more

There were many studies done on 9/11 because within a matter of hours every plane in the states was grounded. This measurably decreased the amount of cloud cover. read more

Airplanes operate on petroleum fuel, which means they release large amounts of carbon dioxide when they fly. Commercial air travel is currently responsible for a relatively tiny part of the global carbon footprint —just 3.5% of total greenhouse gas emissions, according to the Intergovernmental Panel on Climate Change. read more

Airplanes burn an enormous amount of fuel, which releases carbon dioxide and other undesirable gases into the atmosphere, so airplanes are environmentally harmful. Dirigibles would be a more environmentally benign form of air travel. read more