By bouncing a soccer ball, a UMBC sophomore realized rubber made from tree sap can hold a lot of energy. So, he took a rubber ...

Most of the world's soccer balls — nearly 70% — are made in one small city in Northern ... from cutting and molding sheets of hot rubber to patching together the 20 hexagons and 12 pentagons ...

Unlike basketballs, footballs, and soccer ... pressurized rubber ball during the manufacturing process. (The nap actually comes in two pieces, giving the ball its familiar seams.) Made of wool ...

Miles from the main roads, in rural Africa, soccer balls bounce ... might be made of gathered mahogany or driftwood. Some feet are bare, others shod in fraying sneakers, boots, rubber sandals.