> You're assuming that the goal is getting to zero CO2 emission? There is no reality where that is possible. If this works then doing it more is clearly possib

> You're assuming that the goal is getting to zero CO2 emission? There is no reality where that is possible. If this works then doing it more is clearly possible. Maybe not politically or economically viable in the current circumstances but certainly possible. If weathering fine gravel/dust is the mechanism there’s an awful lot of coastal land with relatively active currents in the UK and elsewhere to dump it.