Five New Ancient Genomes Tell Us About Neanderthal Tribes

The researchers, led by Mateja Hajdinjak at the Max Planck Institute for Evolutionary Anthropology, extracted tiny amounts of bone or tooth powder—sometimes as little as 9mg—and used a chemical process to remove modern genetic contamination. They also checked for the telltale signs of degradation found in ancient DNA.

Source: arstechnica.com