Hadi Usman: The 67-year-old Nigerian man who invented a cooking stove that runs on water
Have you ever seen a cooking stove that runs on water? Or have you heard of a 67-year-old doing the unthinkable? Well, In Gombe State, Northern region of Nigeria, a 67-year-old man named Hadi Usman has done the unthinkable by inventing a cooking stove that runs on water