[917_Langheck]

Science cannot terraform the earth to stave off CO2- and CH4-induced climate modulation (irrespective if you subscribe to such hypothesis or not, science cannot effect such change at this time) so, "how on Mars"? (let alone how on Earth) would it be able terraform Mars?

Great movie trick, however, and as Star Trek envisioned the flip phone, maybe something will come of it. "Carbon capture" has been demonstrated to work as a proof of concept, but it is completely out of scale in being effective on any meaningful timeline. (Not to say it's not worth trying, but gaseous production far outstrips any possible sequestration process available at present, or the near future; all of Earth's response mechanisms work only at geologic timescales, punctuated equilibrium notwithstanding.)