motor

The modern world has been transformed by inventions from the electric motor to penicillin.

"Nowadays, especially...electronics, photovoltaic generation, and batteries for all kinds of applications, including motorcycles and motor vehicles, come from China because they are truly very efficient."

Stretching from Alaska to the pencil tip of Argentina, the 48,000km-long Pan-American Highway holds the record for the world's longest road navigable by motor vehicle.

Its motorized innards were prone to skidding, seizing and unexplained work stoppages, causing the crew to occasionally handle the camera like a vending machine that had stolen their money.

The Ukrainian drone pilot told the BBC his unit had regularly detected and eliminated small Russian groups trying to advance on foot and on motor bikes.