Isotope Geochemistry Mineralogy Isotope Analysis Chemical Signatures Sedimentology Atmospheric Chemistry Paleoenvironment Geothermal Systems Volcanic Gases Magma Processes Biogeochemical Cycles Carbon Sequestration Planetary Geochemistry Chemical Composition Element Analysis Prebiotic Chemistry Sulfur Compounds Magma Chambers Planetary Chemistry Ocean Chemistry Early Earth Conditions Environmental Conditions Primordial Soup Early Earth Biospheric Oxygenation Heat-producing Elements Water Distribution Isotopic Analysis Mineral Formation Elemental Analysis Carbon Cycle Trace Elements Gas Emissions Volcanology Biogeochemistry Sedimentary Rocks Isotope Geology Chemical Reactions
Lab simulations reveal that cycling acidity with temperature extremes drives enzyme-free RNA copying under plausible early Earth conditions