Related by context. Frequent words. (Click for all words.) 52 Biogeochemistry 51 Long Term Ecological 49 Eric Rignot 48 computational sciences 47 atmospheric methane 47 gigatonnes 47 atmospheric CO2 concentration 47 atmospheric ozone 46 physics astronomy 46 journal Climatic Change 46 National Laboratory ORNL 45 evolutionary origins 45 carbon dioxide concentrations 45 anthropogenic emissions 45 LTER 44 civilization 44 reactive nitrogen 44 Ediacaran 44 ppmv 44 Scientists theorize 44 Arnold Toynbee 44 warmings 44 bioprocesses 44 atmospheric pollutants 44 methane CH4 43 elementary particle physics 43 Computational Sciences 43 Ames Laboratory 43 Soft Matter 43 Niels Bohr Institute 43 temperate forests 43 geochemists 43 Armed Forces Radiobiology Research 43 Schellnhuber 43 gigatons 43 terawatts 43 Stephan Singer 42 Nitrogen oxides 42 planetary warming 42 atmospheric concentrations 42 Ice Ages 42 Accelerator Facility 42 atmospheric CO2 concentrations 42 Atmospheric Chemistry 42 radiocarbon dated 42 heat trapping gases emitted 42 biomass combustion 42 preindustrial times 42 humans 42 Microorganisms 42 de la Recherche Scientifique 42 WM Keck 41 primitive organisms 41 subtropical regions 41 reseachers 41 humankind 41 Willerslev 41 Electron Microscopy 41 Carbon dioxide emissions 41 Sulphur dioxide 41 CO2 sequestration 41 Ocean acidification 41 Ecology Evolution 41 Snowball Earth 41 nanobacteria 41 EDUCATION Bachelor 41 GEOSS 41 Ecological Analysis 41 Anthropocene 41 hypothetical particle 41 Ken Caldeira 40 Methylmercury 40 biogeochemistry 40 tropospheric ozone 40 mammal species 40 Nanoscale Materials 40 carbon dioxide 40 photochemistry 40 Undersea Research 40 carbon dioxide CO2 40 biosphere 40 algae biofuels 40 preindustrial 40 largest emitter 40 isoprene 40 sulfur dioxides 40 IntergalaticEarth 40 co2 40 atmospheric carbon dioxide 40 nonhuman animals 40 ozone layer depletion 40 Great Oxidation Event 40 functionally extinct 40 Particle Physics 40 CO2 Capture 40 Palaeolithic 40 meteor impacts 40 Faisal Moola 40 CO2 40 Natural Capitalism 40 capitalist societies