In Meghalaya, India, "the wettest place on Earth", summer monsoons cause floods and rapids that are nearly imposible to cross. Residents have responded by building "living bridges" out of the roots of fig trees. These still-living roots allow bridges that continue to grow and strengthen over the years. No one person can complete a bridge alone, so the practice is passed down from one generation to the next, with the construction of bridges spanning entire lifetimes. This is sustainable architecture in practice, and a stunning testament to the power of collaboration.