Quantas especies de humanos existiram e porque restou apenas uma?

Throughout almost all of Earth's history, humans have never been alone. At least nine different human species have walked the planet at the same time—Neanderthals, Denisovans, Homo erectus, the "hobbit" of Flores Island, and several others. They all disappeared. Only one remains: us. But why? The lazy answer is "because we were smarter." But that explanation doesn't survive five minutes of analysis: Neanderthals had brains the same size or larger than ours, Homo erectus lasted five times longer than our species, and Denisovans adapted to some of the harshest environments on the planet. In this video, you will understand what really happened to the other human species, why human evolution wasn't a ladder but a bush full of branches, and what the true advantage of Homo sapiens may have been—which may not have been the brain alone, but the network between brains. And, in the end, a chilling question: if we survived more through connection and luck than through strength, what does that say about our certainty that we will continue to be here? ⏳ If you enjoy the origins of life and the habits, normal or not, that we have, subscribe to the channel. CHAPTERS: 00:00 The girl from the Denisova cave 03:13 How many human species existed? 05:14 Homo erectus: the champion of survival 06:56 Neanderthals: the wrong image 08:51 Denisovans: the ghosts 10:00 The "hobbit" of Flores Island 12:00 The most uncomfortable question 15:00 The advantage that kept us standing 17:36 Proof that we almost didn't survive 19:45 We are not the top. We are the ones who survived. #evolution #humanorigins #neanderthal #denisovan #homosapiens #prehistory #science #anthropology #humanevolution #humanspecies Sources and studies cited in the description pinned in the comments.