To sequester 1 gigaton of CO₂ (about 2.5% of global CO₂ emissions in a year), you’d need billions of tons of rock and an area of land approximately 6 X the size of India (rough, shit calculations, lots of assumptions)
That rock has to be mined, moved and ground to a fine powder, spread over 30milliom kms and then given time to react and hopefully not leech into waterways where it can fuck with alkalinity and ecosystems
That rock has to be mined, moved and ground to a fine powder, spread over 30milliom kms and then given time to react and hopefully not leech into waterways where it can fuck with alkalinity and ecosystems