Kanzi the bonobo, who learned how to communicate with humans using symbols, has died at the age of 44. Raised and kept in ...

Archaeologists have unearthed a set of "truly significant" Stone Age artifacts during an excavation ... it uncovered a pit containing four prehistoric flint tools. The objects are of a type ...

so Stone Age people needed sharp, strong tools to cut trees down and to hunt the animals for food. And this is where a stone called flint came in. There's a real skill to making tools out of flint.

STONE AGE FATHER:Perfect for catching fish. NARRATOR:Stone Age people made tools out of flint, which is hard sharp stone, but easy to flake and shape. NARRATOR:But they also have learnt to make ...