The must-have home improvement items include a tool kit, cordless drill, stud finder, utility knife, and a dependable step ...

Rotary engines have plenty of quirks, but they can still put up some impressive power figures. Here are some of the most powerful rotary engines ever.

A high-speed collision like never before, we tested what happens when a solid bowling ball meets helicopter blades spinning at 700 km/h. The result is pure destruction. Secret Service finds 17 ...

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