"Our focus in India has mostly been on the main pattern variation among people speaking Indo-European and Dravidian languages. The observation we made in 2007-08 was that if you look at genome-wide data in most people in India today, it’s clear that there’s a gradient of people ranging from two extremes—from those related to East Asians and others related to South Asian hunter-gatherers. It’s a striking pattern. We were able to document that this was, to a large extent, the result of the mixture of two very different source populations. More than 4,000 years ago, there were unmixed representations of these groups in India but that no longer is true. It was also clear that what we see of the caste system now goes back much deeper in time, long before the British strengthened these social divisions."

How can ancient DNA affect the political and social lives of nations?Ancient DNA has proven to be very disruptive. When you look at data from the skeletons of people who lived in any one place today, it’s extremely rare that those people looked like people who live in those same places now. This seems to be true almost everywhere now where we get ancient DNAs. We can use this microscope to look at the past and apply it to different ancient cultures and ask the question, how are the people living there in ancient times related to the people living there today? The technology we now have is probing and taking measurements about phenomena that wasn’t possible to quantify before."

Speaking truth whether people like it or not. Go David.