The discovery of human DNA in the 19th century by Swiss chemist Friedrich Miescher transformed the study of human history, allowing scientists to trace the origins of ancient populations. More than a century later, researchers continue to uncover remarkable findings, including the identification of a previously unknown group of ancient people through the study of two infant skeletons discovered in Alaska.
The remains, estimated to be around 11,500 years old, belonged to two Native American infants from the same family. Their exceptional preservation provided scientists with valuable genetic material, offering new clues about some of the earliest inhabitants of North America.
The discovery was made at the Upward Sun River archaeological site in central Alaska, a remote, forested area located about 50 miles southeast of Fairbanks. The site is so isolated that it can only be reached by helicopter. Archaeologist and anthropology professor Ben Potter began conducting excavations there in the early 2000s, believing the region could hold important evidence about the continent’s first settlers.
The area once formed part of Beringia, an ancient land bridge that connected present-day Siberia and Alaska during the Ice Age. Many researchers have long theorized that early humans migrated from Asia into North America by crossing this land bridge thousands of years ago.
One leading explanation for the peopling of the Americas is known as the Beringian Standstill Hypothesis. According to this theory, a group of ancient people became isolated in Beringia for an extended period due to harsh environmental conditions and massive ice sheets. Some scientists believe these ancient inhabitants later became the ancestors of Native American populations.
Potter’s work at Upward Sun River was carried out with the support of local Native American communities, who maintain strong cultural ties to the region. Despite being protective of ancestral burial sites, community members recognized the scientific importance of the excavation and assisted the research efforts.
The first major discovery at the site came in 2010, when researchers uncovered the cremated remains of a three-year-old child dating back approximately 11,500 years. However, the remains were too damaged to allow scientists to extract DNA or determine the child’s sex.
Undeterred, Potter and his colleagues continued excavating the site for several more years. Their persistence paid off when they uncovered another ancient burial containing the remains of two infants.
One of the babies appeared to have been stillborn, while the second infant is believed to have died between six and twelve weeks after birth. Like the earlier child, the infants had been cremated, and their remains were found in a burial pit associated with a fire feature.
Unlike the first discovery, the two infant skeletons were preserved well enough to allow detailed genetic analysis. The DNA extracted from the remains revealed evidence of a previously unknown ancient population, now referred to as the Ancient Beringians.
The findings have provided scientists with crucial new insights into the earliest chapters of human migration into North America and have helped reshape understanding of how the continent’s first people spread and evolved thousands of years ago.
