No doubt there are many, many other varieties of humans which we'll never know about because we'll never find any bones.
What chilling is that shows very clearly that humans can go extinct. In fact, humans go extinct all the time: 50,000 years ago, we shared the earth with at least 5 different varieties of humans (Homo Neanterthalensis, Homo Denisova, Homo Naledi, Homo Florensiensis, and Homo Luzenenensis). Probably also some late surviving populations of Homo Erectus and Homo Rudolfensis. Almost certainly more we'll never know about.
Since the last ice age we've been dropping like flies. In fact, we're the only humans left. And what with climate change, accidental nuclear war, or the singularity looming, we are arguably in a more precarious position than we've ever been.
What chilling is that shows very clearly that humans can go extinct. In fact, humans go extinct all the time: 50,000 years ago, we shared the earth with at least 5 different varieties of humans (Homo Neanterthalensis, Homo Denisova, Homo Naledi, Homo Florensiensis, and Homo Luzenenensis). Probably also some late surviving populations of Homo Erectus and Homo Rudolfensis. Almost certainly more we'll never know about.
Since the last ice age we've been dropping like flies. In fact, we're the only humans left. And what with climate change, accidental nuclear war, or the singularity looming, we are arguably in a more precarious position than we've ever been.