So, when possible, take a train or bus instead of flying.
1.Consider travel alternatives Flying is the most carbon intensive mode of transport, and is often the largest contributor to a person’s individual carbon footprint. The average cross-country, round-trip flight emits about 4,500 pounds of carbon emissions. Short flights are the worst, emitting more CO2 per mile traveled than medium to longer flights. So, when possible, take a train or bus instead of flying. Just think of all the security and TSA headaches you’ll avoid!