Year in review: How humans populated the globe
Genetic studies offer new insights into the ancient exodus out of Africa
![Enga cultural show](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2016/12/6_122416_ancient-human_main.jpg?fit=860%2C460&ssl=1)
GENETIC JOURNEY Recent genetic analyses suggest that natives of Papua New Guinea, shown here during a traditional Enga cultural show in 2015, descend from people who left their Africa homeland some 72,000 years ago.
Michal Knitl/Shutterstock