One week ago, we (family of 5) started on our #travelByTrain from #Oslo (Norway) to #Brest (France).
We visited Stockholm, Hamburg, and Paris, and took 5 trains (including a night-train).
Here is the thread if you are curious: https://fediscience.org/@lavergnetho/112694891322071688
I'd like to estimate the CO2 footprint of our travel compared to the air travel option (Oslo -> Paris, Paris -> Brest). What website would you recommend?