xxShowcase

I'm a sucker for a good "reinventing the wheel" story, and David Henson's 'SurfacePlan' concept is an odd a take on one of humanity's greatest inventions as we've seen in a long time. It's designed to replace engines and drivetrains altogether.

Hybrid commuter bikes generally aren't known for being all that exciting. That's why some cyclists are taking old speed-oriented lugged-steel road bikes that would otherwise go unused, and converting them into zippy, retro-cool city bikes. Here's how you can do it, too.

Some of the most intriguing videos on the internet aren't "viral sensations" … instead, they lurk deep beneath YouTube's placid surface. A wonderfully weird little film known as Mary Worth – the Movie definitely fits in the latter category.

Back in 1970, Sega introduced an arcade game that would pave the way for many of today's most popular video games. Known as Jet Rocket, the electromechanical marvel boasted three world-firsts – even though most folks today don't know it ever existed.

Touring kayaks are typically made of plastic, composites or sometimes wood, but unlike canoes, almost never aluminum. That didn't faze Brennen Kunka, however, who recently built his own all-aluminum kayak from the ground up – and it's awesome!

Gizmag catches up with water resources engineer Darren Shepherd, who shows us a running scale model of a Norwegian whitewater kayaking park that he built for a client.

Gizmag presents a look at some of the gadgets made and used by real-life superheroes.

An inventor and "technomad" is selling his custom-built pedal/wind/solar-powered micro-trimaran.