The Tyndall Travel Tracker has a fairly simple carbon calculator (https://travel.tyndall.ac.uk/); with respect to offsetting there is an ongoing debate currently about how best to achieve this. It is thought that offsetting carbon alone is quite a grey area at present (e.g., trees planted today will offset over 25 years but the damage is done in the now, also many offsetting schemes are...scammy) - we are currently discussing strategies to offset with more than carbon, including development activities as well as biodiversity protection; the problems can be quite linked.

My personal hope is to liaise with some of the best researchers in the world regarding offsetting and have an approved offsetting scheme, which can be applied anywhere, that updates based on the current best understanding; we would then bring this capability into a newly built travel tracker (it's closer to a prototype atm).

Please let me know if this is something you'd find interesting.

> there is an ongoing debate currently about how best to achieve this

My comment was based on the cost to directly pull CO2 out of the air at industrial quantities, not indirect methods like planting trees.

We do have experts regarding things like BECCS also; the goal is to have a multi-pronged approach maximising for efficacy.

There are many calculators that offer a way to donate trees:

https://co2.myclimate.org/en/flight_calculators/new

https://www.clevel.co.uk/flight-carbon-calculator/

https://trees.org/carboncalculator/

Those are fake feel good offset, it price a Paris-NYC round trip with 2.2 tCO2eq at 52€, but the only serious future project of durable carbon capture that I know price it at 600$ the tCO2eq, this would be a 1320$ offset.

The last time I read about this, CO2 sequestration was $100-$200 per metric ton:

https://www.seas.harvard.edu/news/2018/06/team-provides-firs...

Their future target price, not the current one.