[rayiner]

Is this some new thing making rounds on the internet? Airplanes account for 5% of all CO2 emissions, and only a fraction of that is individuals flying. The average American would have to take a dozen New York-Tokyo flights per year to even double their carbon footprint.

I assume you’ve addressed more important sources of carbon emissions, such as moving to a state that doesn’t require heating in the winter or AC in the summer. (And it goes beyond saying that you don’t use Amazon prime or buy anything shipped air freight.)

[kikoreis]

This is off topic but it was startling to me when I looked at CO2 stats that there was so little air travel and so much energy generation and heating. I think we have just stumbled upon the real reason we haven't fully grokked climate change yet.. the problem is much simpler and more brutal than most of us perceive.

[gonyea]

Installing a foam roof or replacing the insulation in your walls goes a long way and saves a lot of money on energy costs over time.

[drilldrive]

My family has installed a house-fan that we use whenever we like the out-doors temperature moreso than our in-doors temperature, which is quite often in our summer months at night.

[morsch]

The world's population can't all move to California, so that's not a sustainable option. But yes, improving home insulation is a low hanging fruit.

The overall impact of aviation is actually less than 5%, though it's fast growing and projected to be 5% and more. (And I doubt only a fraction is related to moving people around.) Note that aviation contributes to global warming in excess of its pure CO2 emissions; at very high altitude even water vapour is an issue. Another point of comparison: aviation's overall impact is about 10% of the entire transport sector, the same amount as all water based shipping.

Either way it's a huge amount, there is no such thing as just an integer percentage of overall emissions.

Source: Wikipedia and IPCC, mostly https://www.ipcc.ch/site/assets/uploads/2018/02/ipcc_wg3_ar5...