I don't recall it making much of a splash here in the US when a month ago a ranking Anglican bishop called environmentalism a moral issue, and pronounced holiday flying a sin. Read Article. But, his comments deserve wider attention, I think.

As a Christian I understand that I have a responsibility to consider the consequences of my actions. Prudence traditionally has been regarded as a Christian virtue. I must ask myself, is this action itself sinful, and, will this action have evil consequences. [For example, urinating on an empty sidewalk at midnight is probably not a sin, but, one consequence of that action may be to endanger the health of those who may walk barefoot, an evil, so I don't urinate on public sidewalks even if no one is around.] If I know that certain consequences of my action will be evil, then I must ask myself if I am under necessity to perfom the action (whether sinful in itself or not). [An example of necessary evil: giving vaccinations will result in harm to a very small fraction of those vaccinated, an evil, but not vaccinating will result in larger numbers suffering harm, a greater evil, so I continue my action of vaccination as a necessary evil.]

I am not sure that flying, in and of itself is a sin, and perhaps the bishop does not either since he seemed to specify holiday flying. However, I think he is correct in that I must ask myself what the consequences are of my flying. One of those consequences will be the addition of carbon molecules to the atmosphere, and consumption of petroleum fuel. I think both of those are evil. Result, as a Christian I probably should not fly unless I must. Driving an automobile probably has a similar logic.

Some related posts. Here and here and here and here and here and here and here and here