Direct Air Capture technology coupled with geological storage (‘DACS’, also ‘DACCS’) has recently emerged as one of the main carbon dioxide removal (CDR) needed to reach net-zero targets. If deployed at scale, DACS would result in ‘negative emissions’ which would preclude the need...

Emerging modes of advanced air mobility are potential alternatives to current ground transport. This study proposes a service network design approach for the air metro, a pre-scheduled service with fixed routes that accommodate passengers for intra- or inter-city trips. The scenarios of...