This is so cool! It's a little unclear from the website, is there hardware I could buy today to physically remove carbon dioxide? What can I actually do?
You can pay to suck carbon dioxide from the sky. Here's one example using this vacuum machine by Sirona: https://www.sirona.tech/remove-co2#Individuals
(I recommend removing 1 kg just for the experience, it's $1)
In terms of buying the hardware yourself, the low end is still tens of thousands of dollars. If you happen to own a farm, a pyrolysis machine can turn your farm waste into solid carbon that's locked up for hundreds of years. And people will pay you to do it too.
If you like investing, you can invest in these companies: https://airminers.com/invest
The other thing that comes to mind is we have a online course where thousands of people have got together and learned about how carbon dioxide removal works: https://bootup.airminers.com/
It's book club style, so you're matched up with a bunch of people and you get to talk through the topics together. Let me know let you think about all this!
I'll check out the online course, thank you. I saw there are a few startups offering capture at an office building scale, and I'll come back with better questions once I learn more!