A few weeks ago I was outright downvoted right here on HN (edit: and also right now, within literally the first 30 seconds of posting this very comment!) for merely suggesting people start by getting their companies and coworkers to see business travel as a carbon liability to be minimized rather than a work perk to be maximized. I'll leave you to draw your own conclusions as to how much we're genuinely willing to even consider entertaining the remote possibility of sacrificing from our own lives.