The End of the Ice Age - Interglacial Period - New & Old Neolithic Age

The interglacial period is marked by increased methanogenesis and global warming. Methanogenesis occurs by nanoarchaeal synthesis. The Neanderthals evolved during the previous interglacial period in East Asia and Central Asia and migrated to Europe. The Neanderthals evolved from Homo erectus and Homo heidelbergensis. This constitutes the first Neolithic Age. The recent Ice Age which started 60000 years ago is ending and the interglacial period with its associated global warming is starting. This is evidenced by an increase in atmospheric methane in the last decades. There is also evidence of nanoarchaeal endosymbiosis leading to neanderthalisation of the Homo sapien species and expansion of the remnant matrilineal neanderthalic clusters in South India. This results in cerebral atrophy and increased cerebellar volume leading to the evolution of a cerebellar cognitive affective disorder phenotype or the neanderthalic autistic phenotype. These newly evolving Neolithic neanderthalic population can be called as Homo autisticus or Homo neoneanderthalis and this interglacial period can be called as the second Neolithic Age.