Sweet Potatoes beat Green Roofs at Sinking Heat Islands

sweetpotato%20roof.jpg

In hot weather there is nothing like green roofs to help reduce the heat island effect, except perhaps this experiment by NTT Development in Japan. They planted a hydroponic garden of sweet potatoes because they evidently control the rise in heat by expanding their leaves and evaporating a large amount of water. If we read the translation correctly, the sweet potatoes were about 1.5 times as effective as a green roof at reducing the heat island effect . Of course it takes energy and equipment to run all of these hydroponics. Why not just grow sweet potatoes in a green roof and get the best of both worlds?::Japan for Sustainability and ::Garbagenews

WHAT'S HOT ON FACEBOOK

treehugger slideshows