Related by context. Frequent words. (Click for all words.) 51 gigatonnes 49 autumnal equinox 47 Millennium Ecosystem Assessment 47 atmospheric CO2 46 vernal equinox 46 atmospheric concentrations 46 chronically hungry 45 Worldwatch 45 interglacial period 45 gigatons 45 equinox 44 atmospheric CO 44 sunspot numbers 44 mass extinction 44 CO2 concentrations 44 Earth 44 drylands 44 radiative forcing 44 exabytes 43 spring equinox 43 equinoxes 43 Mayan calendar 43 WEO 43 interglacial 43 atmospheric carbon dioxide 43 Malthusian 42 nominal GDP 42 Gliese #g 42 industrialized countries 42 Tisha B'Av 42 largest emitter 41 By Jarrod Sarafin 41 planet 41 thirtieth 41 winter solstice 41 heat trapping carbon dioxide 41 warming gases 41 fossil fuels 41 mass extinctions 41 CBO predicts 40 earths 40 By Frankie Genchi 40 Pingdom 40 climate alarmists 40 sunspot cycle 40 tropical deforestation 40 CO2 emitted 40 glacial melt 40 #,#,#,#,# [013] 40 GDP 40 eradicating hunger 40 fossil fuel 40 gdp 40 Carbon dioxide emissions 39 perigee 39 Research NBER 39 greenhouse gas concentrations 39 Industrialized nations 39 Homo sapiens 39 humankind 39 Ozone Layer 39 industrialized nations 39 Chindia 39 Industrialized countries 39 #.#C [004] 39 Gregorian calendar 39 New Horizons spacecraft 39 trln usd 39 preindustrial levels 39 carbon emitter 39 #GW [002] 39 Jacques Diouf 38 homo sapiens 38 WSTS 38 undernutrition 38 megatons 38 Peak Oil 38 glacial melting 38 Real Windows Mp3 38 Gini coefficient 38 CO2 38 CO ² 38 nonrenewable 38 greenhouse gases 38 Annualised 38 planet orbits 38 depletion 38 Andromeda Galaxy 38 industrialized economies 38 twentieth 38 greenhouse gases GHG 38 Geminids 37 absorbing carbon dioxide 37 biosphere 37 glaciers melt 37 global warming alarmists 37 halving poverty 37 Co2 37 lunar calendar 37 Copenhagen Consensus 37 USD#bn [002]