When monkeys in Thailand use stones as hammers and anvils to help them crack open nuts, they often accidentally create sharp flakes of rock that look like the stone cutting tools made by early humans.

Archaeologists found hundreds of animal bones, mostly from small animals like rodents, along with dozens of human-made stone ...

The first stone tools that ancient humans made were deceptively simple. At least 2.6 million years ago, our ancestors learned to strike stones and break off sharp flakes that could function as knives.

Deep in China’s Yunnan province lies one of the world’s most unusual natural wonders, a forest made entirely of stone instead ...