Living Bridges in India Have Grown for 500 Years

Images via Atlas Obscura

Some of the smartest, most sustainable engineering feats were discovered hundreds of years ago, and many have gone unacknowledged. For evidence, take the bridge growers of northeastern India. Planning 10-15 years in advance, they build what may be the most sustainable foot bridges in the world -- by literally growing them out of living tree roots. These bridges are extremely sturdy, reach up to 100 feet long, and many are at least 500 years old.

Article continues: Living Bridges in India Have Grown for 500 Years (Pics)