Ancient Chinese farmers sowed literal seeds of change in Southeast Asia
DNA analysis of 4,000-year-old skeletons suggests migrants helped spread farming and languages
By Bruce Bower
People who moved out of southern China cultivated big changes across ancient Southeast Asia, a new analysis of ancient human DNA finds.
Chinese rice and millet farmers spread south into a region stretching from Vietnam to Myanmar. There, they mated with local hunter-gatherers in two main pulses, first around 4,000 years ago, and again two millennia later, says a team led by Harvard Medical School geneticist Mark Lipson. Those population movements brought agriculture to the region and triggered the spread of Austroasiatic languages that are still spoken in parts of South and Southeast Asia, the scientists conclude online May 17 in Science.