All I can say about offsetting is that ~~most international flights will be offsetted by 2020~~, and it seems like that amount of carbon would only cost about 20$ per passenger per flight, which is to say, offsetting seems to be shockingly cheap.
Is this based on https://www.wired.com/story/airline-emissions-carbon-offsets-travel/ ? I think https://slatestarcodex.com/2019/08/05/links-8-19/#comment-783425 might be relevant—it seems only the increase compared to 2019 is being offset, not the whole flight.
All I can say about offsetting is that ~~most international flights will be offsetted by 2020~~, and it seems like that amount of carbon would only cost about 20$ per passenger per flight, which is to say, offsetting seems to be shockingly cheap.
Is this based on https://www.wired.com/story/airline-emissions-carbon-offsets-travel/ ? I think https://slatestarcodex.com/2019/08/05/links-8-19/#comment-783425 might be relevant—it seems only the increase compared to 2019 is being offset, not the whole flight.