Prof. Pierre Zalloua

So why would actually people move into Arabia?

And that's the question that we had.

So I would say throughout the last 100,000 years, the climate was the main driver for human migration.

So you have to look at climate maps and see

how did Arabia look like 50,000 years ago?

How did Arabia look like 100,000 years ago?

How does Arabia look like today?

And so it's extremely important for us to understand

how the area looked, how the area behaved, you know, how was the environment in that area before we can actually say, well, human lived or didn't live.

So this is a huge element that we need in place first.

So looking at climate shifts, looking at was it wet?

Did it actually, did it have enough moisture?

green pastures for actually people to live, for animals to graze.

So when we talk about humans, you need subsidies for humans as well, right?

I mean, you need the animals that they hunt, you need the plants that they eat, et cetera.

So that's extremely important.

So climatology or the science of environmental changes is extremely important.

That's one aspect that we look

So the second aspect is archaeology.

You know, is there any archaeological remain that actually can tell us that humans did in fact live in that place?