Why study physics, you ask? Scroll down, friend. This video of a guy rolling through a 360-degree vertical loop at a skatepark—cool as ice, with no helmet—is answer enough. Clearly, his understanding ...

Hot Wheels was one of those all-time classic toys. The original cars were tiny versions of real models like the Chevy Camaro, and you could build tracks to make them do crazy stunts, all driven by ...