Several companies are developing motor-powered models that deliver all the fun without the emissions. But to do that, they’re taking to the air. The jet ski is a simple enough craft to understand.

A Jet Ski with two pulse-jet engines that he’s ... How does a pulse-jet engine work? Take, as a means for explanation, the Beast, a Maddox vehicle resembling a go-kart with a trio of pulse ...

The aircraft has an electric motor, which can reach speeds of 75 mph. The price has yet to be confirmed, but it could cost around $40,000. This aircraft is half jet ski and half plane. The FlyNano ...

Both the Kawasaki SX-R Jet Ski and Yamaha SuperJet are popular personal watercraft options, but which one best meets your requirements?