Life's origin likely depended on the specific chemistry of deep-sea hydrothermal vents

Lane presents evidence favoring alkaline hydrothermal vent environments as the probable setting for life's origin, arguing that these vents naturally generate the chemical gradients and proton concentration differences across mineral membranes that closely resemble the energy-harvesting mechanisms every living cell still uses today. He contends this isn't a minor detail but central to explaining why life's most fundamental energy currency, a gradient of protons across a membrane, exists at all, since this specific vent chemistry would have provided a naturally occurring version of the same gradient before life had evolved any biological machinery to generate one itself. This argument reframes life's origin as less a matter of chance chemical accident and more a predictable consequence of specific geochemical conditions that may recur wherever similar hydrothermal environments exist, with implications for the plausibility of life originating elsewhere in the universe under comparable conditions. Takeaway: the universal energy mechanism in every living cell likely originated as a direct echo of hydrothermal vent chemistry.