Petrified wood is one of the most sought-after materials in the world for both its aesthetic value and its scientific value.

Wow Amazing Airboat DIY - RC Boat at Home ...

High above a barren California desert on Tuesday, a privately developed aircraft broke the sound barrier for the first time ...

Lockheed’s Flying CARR made this concept a reality.” The notion of a fixed-wing airplane that can turn into a rotary-wing aircraft is hardly new. An example of such a platform can be seen in the joint ...