Green Beer Bottles to Solar Hot Water
They’re probably drinking a lot of beer in Quqiao village, in Shaanxi Province, China.
Ma Yanjun, a carpenter, said he wanted his mother to be able to enjoy a comfortable shower anytime, and since a solar water heating system was too expensive, he devised a way to make one of his own.
Using only water-filled beer bottles and connecting hoses, Ma’s mother now has hot water on demand, and so do more than 20 other families [...]
