New research is challenging long-held beliefs about the arrival of humans in the Americas. For many years, scientists believed that humans first arrived around 13,000 years ago and played a major role in the extinction of large animals like giant ground sloths, mastodons, and saber-toothed cats. However, new evidence from several archaeological sites suggests that humans may have arrived much earlier, possibly up to 27,000 years ago, and coexisted with these enormous creatures. One of the key sites is Santa Elina in Brazil, where the bones of giant ground sloths show signs of being manipulated by humans. This new evidence could significantly alter the understanding of early human history in the Americas and its environmental impact.

Recent studies using advanced techniques, such as ancient DNA analysis and fossil chemical testing, have provided compelling evidence supporting an earlier human presence in the Americas. Researcher Mírian Pacheco has found that the bones of sloths from Santa Elina were carved shortly after the animals’ deaths, suggesting that humans were interacting with these creatures before they became extinct. This challenges the previously accepted theory known as the “Pleistocene overkill,” which suggested that human arrival led to the rapid extinction of large mammals. The findings have sparked significant debate among experts, but they open new possibilities for understanding human migration and its effects on the environment. As new sites are discovered and analyzed, the timeline of human settlement in the Americas may need to be revised, prompting a reevaluation of past assumptions and offering fresh insights into early human-animal interactions.