Sabre-toothed tigers were among the most dangerous predators early humans ever faced. Their long canine teeth and powerful bodies were designed for killing large prey with precision and speed. This ...

Bones and tools found in a Sri Lankan cave show how Homo sapiens adapted to dense rainforest environments as early as 45,000 years ago. NOVA is available to stream on pbs.org and the free PBS App, ...

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 ...