Tanzania
A high school student built a robot that can walk, turn its head, speak and perform other functions with the help of a remote control. Gracious Ephraim built the robot last year using local materials including aluminium box, wires, tin containers, pieces of metal and a memory chip for the brain. The robot is powered by solar energy and cost the science student 200,000 Tanzanian Shillings ($89) to put it together in 12 months.