Early humans relied on simple stone tools for 300,000 years in a changing East African landscape

Our prehistoric human ancestors relied on deliberately modified and sharpened stone tools as early as 3.3 million years ago.
NPR

Fire-making materials at 400,000-year-old site are the oldest evidence of humans making fire

It's easy to take for granted that with the flick of a lighter or the turn of a furnace knob, modern humans can conjure flames — cooking food, lighting candles or warming homes. For much of our ...