Most Energy Saving Way to Get Hot Water?

Ma Yanjun the farmer, of Qiqiao village, Shaanxi province made this setup of 66 beer bottles interlinked together to work like a solar powered water heater so that his mother can shower in hot water. Truly ingenious and probably more environmental friendly than the big talking West's solutions for renewable energy.

From Weird Asia News "Beer + Sunshine = Hot Water" via Digg.