Hybrid-electric aircraft maker Pipistrel just pushed its Nuuva V300 electric vertical takeoff and landing (VTOL) craft ...

The leader of the Tucson Police Department's developing high-tech unit is aware of "big brother" concerns, but Lt. Don ...

Most ads were in development during last fall's U.S. presidential election race, so avoiding controversy was even more of a ...

Russian scientists have developed a plasma electric rocket engine that could enable travel to Mars in just one to two months.