We often hear apparent wind described using the analogy of a person sitting in a convertible car on a still day. As the car accelerates from zero to 20 mph, the apparent wind felt on their face will ...

Humans have been sailing various seas and oceans for thousands of years, and using boats for potentially even longer than that. But as a species we wouldn’t have made it very far if it was only ...

If you search the outer reaches of the internet you will find all sorts of web sites and videos purporting to answer to free energy in the form of perpetual motion machines and other fantastical ...

Solar sails have some major advantages over traditional propulsion methods—most notably, they don't use any propellant. But, ...

Take that main sheet, two hands. Let the tiller go for me. You John there. Good, clean it. That's good. Hold it right there. OK. I'll grab it, Rob. Let me get us out of your. I understand that this is ...