"Some airlines allow you to try to compensate for the carbon footprint you create when flying, however, by buying what are known as carbon offsets, or various ways to reduce greenhouse gases. Passengers on airlines like Delta and United can calculate their carbon footprint on the airline websites, which equate the size of a trip’s carbon footprint with a dollar figure. They can then donate their money or miles to a carbon reduction project such as forest conservation or renewable energy. Airlines are not the only ones offering offsets, though...."
#1 on "10 Ways to Be a Greener Traveler, Even if You Love to Fly."
Just pay for the absolution of your sins. Someone is available to receive your payments.
Image credit: Lucas Cranach the Elder.