Paul Kozowyk, a PhD student working under the supervision of Marie Soressi, collecting sediment for genetic analyses at the archaeological site of Les Cottés, France.
View of the valley from above the Denisova Cave archaeological site, Russia. [Read the full story on the search for human DNA]
Stratigraphic profile of the East Chamber in Denisova Cave, Russia, from which sediment samples were collected for genetic analyses.
Scientists found DNA related to the extinct human lineage called Denisovans in Denisova Cave in Siberia. Here, Richard (Bert) Roberts, Vladimir Ulianov and Maxim Kozlikin (clockwise from top) plan the sampling of sediments in the cave's east chamber.
The Galería del Osario ("tunnel of bones") at the archaeological site of El Sidrón, Spain. Neandertal DNA was retrieved from sediment collected from a layer rich in Neandertal skeletal remains in this cave.
Excavations at the site of El Sidrón, Spain.
Excavations at the archaeological site of El Sidrón, Spain, are carried out using a "DNA clean" protocol to avoid contaminating the samples.
Entrance to the archaeological site of Vindija Cave, Croatia.
At the lab
Matthias Meyer at work in the clean laboratory at the Max Planck Institute for Evolutionary Anthropology.
Viviane Slon preparing a sediment sample for DNA extraction. [Read the full story on the search for human DNA]
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Jeanna served as editor-in-chief of Live Science. Previously, she was an assistant editor at Scholastic's Science World magazine. Jeanna has an English degree from Salisbury University, a master's degree in biogeochemistry and environmental sciences from the University of Maryland, and a graduate science journalism degree from New York University. She has worked as a biologist in Florida, where she monitored wetlands and did field surveys for endangered species. She also received an ocean sciences journalism fellowship from Woods Hole Oceanographic Institution.