Tag: Historical energy

Over 50% of the daily calories for an average person should come from carbohydrates, the body's primary fuel. The simple question, **what is your first source of energy?**, has a multifaceted answer depending on whether you're talking about human biology or human history.

Archaeological sites across Africa show evidence of controlled fire use by early hominids dating back at least 1 million years. This ability to control fire marks the point where wood became the first major fuel source for humans, fundamentally altering their lifestyle and evolution.