Which RC submarine is best? Remote control toys can be hugely entertaining. From racing through dirt and doing back flips to soaring through the clouds, you are bound to find a gadget that’s suitable ...

Building a personal submarine may seem as fanciful as a DIY jet pack—but Cal Giordano proved that with a little ambition, and a recycled 500-gallon propane tank, most anything is possible. "After ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. Justin Beckerman was walking to high school with some friends when ...