Materials · around 2045

Gigatonne-scale carbon removal

Projection

Machines and mineral processes pull a billion tonnes of CO2 a year back out of the air.

Direct air capture, enhanced rock weathering and mineralisation would turn captured CO2 into stable rock or durable products. At gigatonne scale it would begin to bend the Keeling curve down.

Why it’s plausible: Pilot plants operate today at thousands of tonnes; scaling a millionfold depends on cheap clean energy, durable carbon markets and verified permanence.

See it in the living treeWikipedia