the paper, “Rail-based direct air carbon capture”<p><a href="https://www.cell.com/joule/fulltext/S2542-4351(22)00299-9" rel="nofollow">https://www.cell.com/joule/fulltext/S2542-4351(22)00299-9</a><p>their website:<p><a href="https://co2rail.com/" rel="nofollow">https://co2rail.com/</a>