Supercapacitor technology often looks like a revolutionary energy storage technology on the surface, but the actual performance numbers can be rather uninspiring. However, for rapid and repeated ...

The bikes stay upright because the tires fit snugly between the wooden slats. This DIY bike rack by @hamsterwheelbikerepair is made with just wood and screws! The diagonal pieces hold the bike tires.

What happens when a bicycle and rowing machine combine? You get the Rowbike. The Rowbike is a bicycle that is used in a way similar to a rowing machine. It is powered by using your arms and legs ...