The most comprehensive genetic study of Indigenous Australians to date has unearthed a mystery. We know that humanity's closest relatives are Neanderthals and Denisovans, but the new study came up with a DNA discrepancy that may point to a third unknown species. Get the whole story in the videos below.
DNA Suggests A New Human Relative
It could be a fluke—but it could also be for real.
The Sex Lives Of Ancient Humans
Our ancestors got around.
Sequencing Neanderthal DNA
Delve into how scientists are studying whether modern humans have Neanderthal genes.
How Did Neanderthals Sound?
Not the way you'd think. (This one's a Curiosity staff favorite.)
Key Facts In This Video
The throat of a Neanderthal is shorter than that of a human, meaning a Neanderthal voice was likely higher. 00:16
Neanderthals' voices would have been affected by their deep rib cages and large nasal cavities. 00:45
This is what a Neanderthal may have sounded like: 01:51
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