The bone tools were created the same way tools were made from stone.

Early human ancestors known as hominins (human ancestors who could walk upright) had already been making tools out of stone in some capacity for at least a million years, but there’s been scant ...

Early human ancestors known as hominins (human ancestors who could walk upright) had already been making tools out of stone in some capacity for at least a million years, but there's been scant ...