> More than just profitability, can they make a dent in our carbon problem? The scale of our carbon problem is on the order of 30 billion tons of CO2, of which maybe 1 billion tons are due to lime production. Heimdal is currently at the scale of 1 ton per year - nine orders of magnitude away from making a difference. Assuming continuous Silicon Valley ridiculous growth rates of 50% year over year, they will take 50 years to grow to a point where they are actually making a dent in our carbon problem. I wish them good luck.

They don't need to do it all alone. If this idea is solid, a lot of different companies and nations could be doing this.

I'm excited for China to have carbon-neutral cement. If they do, it will probably be of their own making and not tied to this company growth.