Nigerian Physics Undergraduate Mubarak Muhammad Abdullahi, Builds Helicopter

Mubarak Muhammad Abdullahi, a 24-year-old physics undergraduate in northern Nigeria, takes old cars and motorbikes to pieces in the back yard at home and builds his own helicopters from the parts.

"It took me eight months to build this one," he said, sweat pouring from his forehead as he filled the radiator of the banana yellow four-seater which he now parks in the grounds of his university.