I've used a number of carbon output calculators, and one of my major carbon outputs are two flights from the Inland Northwest to the Northeast part of the country each year (work related). It seems that in the case of my travel, my lowest carbon option (according to at least one calculator I've used) is actually an economy ticket on an aircraft. It also clarified that for shorter trips, the greyhound bus is without e…
[0] - https://globalwarmingisreal.com/2013/03/20/earthtalk-airplan... [1] - https://www.researchgate.net/publication/11218772_Climatolog...