The document discusses the evolution of tools used by early hominids from 4 million years ago to present. It describes that early hominids like Australopithecus afarensis from 4-1.2 million years ago used tools found in nature like sharpened rocks and sticks. Homo habilis from 2-1.5 million years ago were the first to make their own stone tools. Homo erectus from 1.6-800,000 years ago significantly improved tool making and were the first to hunt with tools like stone axes. Homo sapiens from 133,000-32,000 years ago created bone needles, fish hooks, and sewed animal skins, while current Homo sapi