Related by context. Frequent words. (Click for all words.) 61 finite resource 55 inexhaustible 55 Fossil fuels 54 finite 53 economically recoverable 53 nonrenewable resources 53 technically recoverable 51 abundant 50 fossil fuel 49 fossil fuels 49 extractable 48 nonrenewable 48 inexhaustible supply 48 depletion 47 environmentally benign 47 polluting fossil fuels 47 Thorium 47 geopolitically 46 depleting 46 renewable feedstocks 46 abiotic 46 underexploited 46 extractive 45 producible 45 economically viable 45 commercially viable 45 Renewable fuels 45 inelastic 45 fertile soils 45 richly endowed 45 renewable 45 rapidly depleting 45 methane hydrate 45 consumptive 44 environmentally destructive 44 unexploited 44 scarcest 44 CO2 sequestration 44 richly blessed 44 Self sufficiency 44 Pinetree investments 44 energy 44 hydrocarbon fuels 44 commodity 44 biomass geothermal 44 storable 43 scarcity 43 abundantly 43 desalinization 43 kerogen 43 nonpolluting 43 alternative energies 43 dispatchable 42 biofuel feedstock 42 emit CO2 42 compare FindStuff comprehensive 42 minable 42 becoming scarcer 42 overexploited 42 extraction 42 expending 42 agricultural residues 42 artificial fertilizers 42 fungible 42 wholly dependent 42 geothermal biomass 42 hydroelectricity 41 thorium 41 decarbonisation 41 crop residues 41 methane hydrates 41 substitutable 41 infinite 41 petroleum 41 biogenic 41 Highly enriched uranium 41 exploitable 41 admiral asks 41 Replenishing 41 ecosphere 41 artificial photosynthesis 41 minerals 40 overexploitation 40 AP Interview CG 40 negative externalities 40 wean ourselves 40 COGE Handbook 40 Valery Nesterov 40 supercycle 40 commercially feasible 40 synfuels 40 economically feasible 40 desalinated 40 carbon sequestration 40 earths 40 unproved reserves 40 scarce 40 expended 40 Thar Coal 40 potentialities 40 inestimable value