High-speed rail would revolutionise interstate travel and would also be an economic game-changer for dozens of regional communities along its path.

Social media has revolutionised how beauty is curated, captured, and consumed.

A permanent base on Mars would have a number of advantages beyond being a bonanza for planetary science and geology. If as some evidence suggests exotic micro-organisms have arisen independently of terrestrial life studying them could revolutionise biology medicine and biotechnology.