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 ...

As early humans spread from lush African forests into grasslands, their need for ready sources of energy led them to develop a taste for grassy plants, especially grains and the starchy plant tissue ...

For decades, textbooks painted a dramatic picture of early humans as tool-using hunters who rose quickly to the top of the food chain. The tale was that Homo habilis, one of the earliest ...