Hard for me to imagine there's only 7 billion people on Eart

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Not the same but when I was 13-14 my parents explained to me that humans have only been around a couple hundred thousand years. I had always thought, because when I was a kid they only said the stone age started a really long time ago, that it must be at least a million years, maybe several million. My parents laughed. I felt really creeped out that humans only existed for so short.

The genus Homo has existed for at least two million years.

The genus and species Homo sapiens has existed for at least 200,000 years.

Humans as we know them- anatomically modern humans have only existed for 200 thousand years. But archaic humans existed for two million years (homo hablis, homo erectus, heidelburg man, Neanderthal man, etc).

And before that humanlike apes (Australopithicines) existed for a still unknown length of time ( four million plus- each new discovery pushes it back).

The "stone age" actually started with the Australopithicines, and prior to the genus homo with the Olduwan tool industry (really primitive stone tools of the type found at Olduvai Gorge in Africa made by Australopithicines), and then progressed to various more advanced tool industries of the various hominids down until the start of the Bronze Age five thousand years ago.

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To some folks its "only" 200 thousand years that modern humans have existed. But to others its hard to believe humans existed prior to 4000 BC when the Bible says God created Adam and Eve.

Nice picture). However I think there're places on it with no lights and people. Even though there fortunately places untouched by humans.