Sure, but dont underestimate the inefficiency of power production and sequestration. Take take the gallium example, for atmospheric levels of CO2, is 400:1. Ad

Sure, but dont underestimate the inefficiency of power production and sequestration. Take take the gallium example, for atmospheric levels of CO2, is 400:1. Add the thermodynamic minimum to reverse GalliumOxide to Gallium and O2, and its 800:1, at an absolute minimum. This crushes the difference to methane. More importantly its a pointless argument, we have practically endless nuclear fuel available, enough to supply the world with power entirely for millions of years. So it does not matter if its inefficient, its climate neutral anyways as long as we stop being idiots and use what we have better. That said there are way simpler more cost effective methods than using a rare earth metal.