India's Khasi matriarchs

In the Khasi tribe, an indigenous community of 1.3 million people living in the state of Meghalaya in northeast India, women enjoy a special status. A matrilineal society for centuries, it is one of fewer than 500 left in the world. But in a country where patrilineal structures are now more common and male children are preferred, it's a way of life at risk of disappearing.