I have to travel soon and I have two options. One is to fly for 3 hours, another is to take a high speed train for 11.5 hours. The flight ticket is about 100 USD cheaper than the train ticket.
My aim is to minimize the environmental impact of my travel. So taking the train seems to be the obvious choice. But I wonder if I'd better save the 100 USD and donate the money to organizations such Clear Air Task Force or Sunrise Movement, which may actually have better impact on the environment?
According to Founders Pledge estimates, the CO2 savings from donating 100 USD (maybe 1 ton per USD, with high uncertainty) will greatly exceed the emissions from your flight (which might be on the order of magnitude of 1 ton) [1]. Donating USD 100 to Atmosfair, while less effective, would also offset this flight [2]. If you include the value of your time, the cost of the train trip might be far, far higher.
Plane emissions are further complicated, if you live in the EU, by emission certificates - which might cause a counterfactual CO2 saving, when deciding not to fly, of almost zero.
I personally stopped flying in 2015 - but not out of EA considerations. I made that decision because it feels good and unlocks new forms of adventure. It also simplifies my life (by removing certain travel options) and opens up conversations with interesting people who pursue the same lifestyle. I also consider it an exercise in personal growth. It is not a good way to help the climate when compared with donations, and I am open to the possibility of flying again in the future.
Agree with Lukas: better to book the flight. Not least because a 100 USD donation to Founder's Pledge or CATF can likely be doubled by various matching 2022 opportunities. Every.org's promotion is an example.
A slightly similar choice came up for us when we bought a car in 2020. (A new job required one.) We would've preferred a used EV/hybrid. During the peak of the pandemic, a dealer was willing to deliver a used non-hybrid vehicle to our door for many thousands of USD less. That allowed us to invest a bit more while asset prices were in the doldrums. In the last two months we've steadily donated those appreciated assets to CATF, Carbon180, and dozens of other EA charities. Through trading donations (e.g., we donated to an AI charity in exchange for another EA giving to CATF or Carbon180) we have driven >1,000 USD to EA-embraced climate charities from that car purchase. More if you consider alternative protein charities to have a climate impact, as we do.
There are also likely strong "pandemic externality" reasons to choose the option that puts you in public for fewer hours. You might want to consult microCOVID's fantastic calculator to see how that math works out.
It mostly helps when there are rule-bound matching funds available. Let’s say you think CATF is a very effective charity when it comes to issues you care about, and that Good Food Institute is somewhat less effective. Person B has the exact opposite perspective.
If there’s an Every.org style matching opportunity, and you give $200 to CATF, Every.org will only match $100 of that ($300 total for CATF). Likewise for Person B and GFI: her $200 becomes $300 for GFI. If you find each other through the EA Forum and coordinate to split your $200 personal gifts and ... (read more)
It mostly helps when there are rule-bound matching funds available. Let’s say you think CATF is a very effective charity when it comes to issues you care about, and that Good Food Institute is somewhat less effective. Person B has the exact opposite perspective.
If there’s an Every.org style matching opportunity, and you give $200 to CATF, Every.org will only match $100 of that ($300 total for CATF). Likewise for Person B and GFI: her $200 becomes $300 for GFI. If you find each other through the EA Forum and coordinate to split your $200 personal gifts and each give $100 to CATF and $100 to GFI, then EVERY dollar you both give will be matched. So each charity receives $400 instead of $300 from the same level of donations from you and Person B, as your giving is 100% matched — instead of 50% only.