Climate change primarily related to methanogenesis by human endosymbiotic & colonic archaea can lead to endosymbiotic archaeal growth & neanderthalisation of the homo sapien species. The exposure to the low level of EMF fields due to widespread use of the internet as well as low dietary fibre leads to increased archaeal endosymbiosis. The endosymbiotic archaea also generates RNA viroids which are converted to DNA viroids by HERV reverse transcriptase for integration into the genome. The archaeal RNA & DNA viroids can also hybridise with human genomic sequences. The constant transfer of cometary genes from the interstellar extraterrestrial intelligence of archaea & RNA viroids due to impact of meteors on environment of the homo sapiens & hybrid population. The hybridization of archaeal RNA viroids with human genomic HERV, cometary genes & other sequences can generate HIV, SARS, COVID 19 & MERS. This is the origin of the COVID 19. Endosymbiotic archaea can help human withstand global warming by modulating metabolism producing ammonia oxidation & CO2 fixation. This leads on to a COVID 19 resistant homo neoneanderthalis & homo sapien extinction as well as end of COVID 19 pandemic.