It's an issue for sure, but at ~5% of global CO2 there are other easier sources to target first. https://en.wikipedia.org/wiki/Environmental_impact_of_aviation

It's an issue for sure, but at ~5% of global CO2 there are other easier sources to target first. https://en.wikipedia.org/wiki/Environmental_impact_of_aviation https://en.wikipedia.org/wiki/Environmental_impact_of_aviati...