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Fire, a tool broadly used for cooking, constructing, hunting and even communicating, was arguably one of the earliest discoveries in human history. But when, how and why it came to be used is hotly debated among scientists. A new scenario crafted by University of Utah anthropologists proposes that human ancestors became dependent on fire as a result of Africa’s increasingly fire-prone environment 2-3 million years ago.
As the environment became drier and natural fires occurred more frequently, ancestral humans took advantage of these fires to more efficiently search for and handle food. With increased resources and energy, these ancestors were able to travel farther distances and expand to other continents.Image credit: James F. O'Connell
