Related by context. Frequent words. (Click for all words.) 54 drylands 52 atmospheric methane 52 salination 51 hydrological cycle 51 species extinctions 50 glaciers melt 49 Ecological Footprint 49 ecological degradation 48 Soil erosion 48 noncommunicable diseases 48 glacial melting 48 frequent droughts 47 arable land 47 driest continent 47 Antibiotic resistance 47 glacial melt 47 glaciers melting 47 industrialising 47 overexploitation 47 acidifying 47 mountain glaciers 47 hydrologic cycle 47 rapid urbanization 47 prolonged droughts 47 severe droughts 47 hotter summers 46 Hip fractures 46 freshwater ecosystems 46 depletion 46 ecological footprints 46 urbanization 46 gigatonnes 46 Therein lurks 46 Ocean acidification 46 AP Interview Schieffer 46 atmospheric nitrogen 46 Earth ozone layer 46 Melting glaciers 46 ocean acidity 46 terrestrial ecosystems 46 manmade greenhouse gases 45 amphipods 45 undernourishment 45 atmospheric CO 45 finite 45 wetland ecosystems 45 atmospheric CO2 45 Alpine glaciers 45 overexploited 45 eutrophication 45 Physical inactivity 45 Rapid urbanization 45 tropical deforestation 45 call clericalism 45 decarbonisation 45 Joachim von Braun 45 nutrient loading 45 melting permafrost 44 potent greenhouse gas 44 semi arid regions 44 cryosphere 44 freshwater 44 Millennium Ecosystem Assessment 44 Michel Jarraud 44 drier summers 44 rapidly urbanizing 44 nitrification 44 phytoplankton blooms 44 finite resource 44 deforesting 44 Fatih Birol chief 44 overfishing pollution 44 fossil fuels 44 consuming 44 amphibian populations 44 Rignot 44 deglaciation 44 carbon sinks 44 Raviglione 44 Industrialized countries 44 lowland forests 44 glacial retreat 44 depleting 44 deforestation 44 Desertification 44 aquatic ecosystem 44 environmental degradation 44 marine ecosystems 44 consume 43 preindustrial 43 greenhouse gases GHGs 43 Achim Steiner 43 ocean ecosystems 43 icecaps 43 biosphere 43 livestock rearing 43 nonrenewable resources 43 undernutrition 43 Ultraviolet radiation 43 arid regions 43 acidify