Question

When was the earliest proof of human presence on earth?

Answer 1

It depends...

Explanation:

It depends what you mean by human.

Anatomically modern human remains dating back approximately `200000` to `300000` years have been found.

Cro-Magnon man dates back to about `45000` years ago and exhibits typical human behaviour too, especially the use of stone tools.

The earliest cave paintings found in several sites range from about `35000` to `40000` years old.

So I guess you could say that we can be pretty confident that anatomically and behaviourally modern humans had arrived by about `40000` years ago, but possibly much earlier.