21 Jul '11, 7pm

Living Bridges in India Have Grown for 500 Years (Pics) : TreeHugger via @TreeHugger

Living Bridges in India Have Grown for 500 Years (Pics) : TreeHugger via @TreeHugger

Requiring the harvesting of only a few betel nut trees to create, each root bridge is sturdy, efficient, and, well, alive. A tribe in the hilly Khasi and Jaintia region of India -- one of the wettest places on Earth -- evidently came up with the concept some hundreds of years ago. Atlas Obscura explains : The War-Khasis, a tribe in Meghalaya, long ago noticed this tree and saw in its powerful roots an opportunity to easily cross the area's many rivers. Now, whenever and wherever the need arises, they simply grow their bridges. Photo Credit: Vanial In order to make a rubber tree's roots grow in the right direction--say, over a river--the Khasis use betel nut trunks, sliced down the middle and hollowed out, to create root-guidance systems. The thin, tender roots of the rubber tree, prevented from fanning out by the betel nut trunks, grow straight out. When they reach the oth...

Full article: http://www.treehugger.com/files/2010/09/living-bridges-in...

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