School closures and travel delays as arctic air brings snow and sleet to parts of the U.K.
Dozens of schools closed and road and train travel ground to a halt in many parts of the U.K. on Tuesday as a cold snap ...
Forget driverless cars. One company wants autonomous helicopters to spray crops and fight fires
Hector Xu founded Rotor Technologies in 2021 and developed unmanned helicopters. Rotor has built two autonomous Sprayhawks ...