Maybe it’s time to say goodbye to the jet pack. For a long while now, when someone mentioned “personal flying machines,” the image that came to mind was of people wearing devices powered by small, but ...

There was a time when having your own plane was a pretty clear indicator that you were part of that upper crust of society. If it was a pricey and rare electric plane, then all the more. But those ...

Leonardo da Vinci was, by any metric, a genius – but he was still limited by his time. The man may have been a secret authority on anatomy, music, art, engineering, and even frickin’ paleogeography, ...