The POD is that the lineage of bipedal apes in Africa goes extinct, perhaps due to a minor asteroid impact in the AMH era. The lineages survive elsewhere, namely Neanderthals, Erectus, and the hobbits. What likely course does this human-less world take? I know this would butterfly away history as a concept, but I'm mainly curious in how the natural history of Earth would develop with our lineage extinct and the archaics surviving.