Researchers from Tel Aviv University have revealed that the technological shift in prehistoric humans, from using large stone tools to smaller, more sophisticated ones, was influenced significantly by the decline of megaherbivores, such as elephants and hippos. This change occurred around 200,000 years ago, marking the transition from the Lower Paleolithic to the Middle Paleolithic period. Previously, heavy-duty tools were essential for butchering large animals that were a primary food source. The study, published in the April issue of the Quarterly Science Review, argues that the disappearance of these large animals necessitated a shift in hunting strategies, leading to the development of smaller tools suited for processing smaller prey like fallow deer. The researchers analyzed remains and tools from various archaeological sites across the Levant, highlighting how profound ecological changes can shape human culture and technology. Professor Ran Barkai stated that these findings suggest that major environmental changes, rather than a sudden leap in cognitive abilities, directly influenced technological advancements in human history.