Question

When did the first human exist? And when did they start populating the earth?

Answer 1

There is no answer to this, as "humans" are evolved, and are still evolving. When did the first catfish appear? There is no answer.

Answer 2

Thanks and What did humans evolve from?

Answer 3

http://humanorigins.si.edu/education/introduction-human-evolution

Answer 4

So six million years ago?

Answer 5

I just want to know when did humans start populating?

Answer 6

six million years ago is a good estimate. No one wrote it down.

Answer 7

So nothing is accurate? But estimated

Answer 8

Let say the humans started populating six million years ago, how come there is only over 7 billion people? I mean if you calculate the population today should be in 100 trillions

Answer 9

You're not accounting for

~ poor hygiene and understanding of germs
~ diseases and illnesses
~ pandemics
~ infant mortality rates
~ wars
~ accidents

... and all sorts of other reasons for humans' deaths.

Answer 10

I am accounting those too and it still doesn't add up to it.