The Evolution of the Human Brain

The earth is about four point five seven billion years old, and that's actually a pretty good estimate based on some of the chemistry of some of the oldest rocks. There was a worm like creature around about 525 hundred 30 million years ago that had aspects of our body plan in it. We're derived from one of those worm like creatures. Some people claim that there is evidence in the chemistry of rocks about almost about four billion years old that suggests that creatures with metabolism were around. Whether that'si still in the case, is brain open question, right? So, ok, soe we blasted pretty far ahead. But clearly it had to happen.