FYI, This was discussed a little while ago: https://news.ycombinator.com/item?id=20403570

I do wonder about the effects on aquatic ecosystems and migratory birds/other animals that use the beaches to nest.

My first question is why don't they list the TWO independent accounting firms that are auditing this non-profit?

I realize that not all states require nonprofits to conduct audits but this seems like a wonderful area to scam people. "Buy this $300 necklace and save the planet"

It's great on paper, but we find nonprofits mostly benefit the people running them and very little of the money actually goes to the actions the nonprofits claim to be undertaking. The science can be sound, and their intentions can be honorable, but that doesn't mean that what they want to do is financially viable, especially if the principles are paying themselves very high salaries, which is typically what happens with nonprofits. I know a couple of multi-millionaires who been running struggling nonprofits for years. It's funny how the people running the nonprofit have done phenomenally well but their nonprofits hardly do anything, modern day snake oil salesmen.

I would think that an organization trying to save the planet would want to be make sure everything they do is transparent and above board.

7 cubic km of olivine is a staggering amount. Makes you wonder whether the effect of deploying the olivine would even offset the energy cost and CO2 emissions of extracting and moving around all that rock.

This sounds pretty viable, and very cost effective. Any climate scientists want to chime in?

Hmm so olivine is $25 per ton while coal is $50 per ton. Assuming a roughly equal amount is needed to offset, it could work, increasing energy price by about 50%?

What effect would this have on the ecosystems of the beach?

I suppose in some sense you could consider it a trolley problem - do we kill one to save millions - but it seems very intensive?