Related by context. Frequent words. (Click for all words.) 63 glaciers 60 melting glaciers 57 glacial melt 57 melting permafrost 57 glacier 56 mountain glaciers 55 Greenland ice 55 permafrost 54 melting ice 53 polar ice 52 glacial ice 52 glacial lakes 52 meltwater 52 glaciation 52 lake sediments 51 Antarctic ice 51 landforms 51 polar regions 50 glacial 50 atmospheric carbon dioxide 50 moraine 50 Antarctica 49 acidification 49 greenhouse warming 49 polar caps 48 mass extinctions 48 ocean acidification 48 seamounts 48 Antarctic Peninsula 48 glacial lake 48 volcanism 47 marine ecosystems 47 Glaciers 47 melting polar 47 Arctic Ocean 47 oceans 47 sediment cores 47 melting 47 volcanoes 47 volcanic activity 47 landmasses 47 biota 47 volcanic eruptions 47 arctic 47 Tibetan Plateau 46 lava flows 46 stalagmites 46 mid latitudes 46 Melting ice 46 plate tectonics 46 tundra 46 megafauna 46 biodiversity hotspots 46 Arctic 46 lichens 45 anthropogenic climate 45 Arctic tundra 45 Qinghai Tibet Plateau 45 coral reefs 45 Earth crust 45 lava flow 45 sediments 45 Ellesmere Island 45 lichen 45 Antarctic 45 earth crust 45 mass extinction 45 floods droughts 45 peat bogs 45 boreal forests 44 geologic 44 Antarctic Ice 44 boreal 44 crustal 44 boreal forest 44 polar bears 44 flora fauna 44 Pleistocene 44 global warming 44 biosphere 44 snow melt 44 ecosystems 44 aquatic ecosystems 44 coastal erosion 44 snowmelt 44 British Antarctic Survey 43 sedimentary rock 43 soil erosion 43 acid rain 43 freshwater 43 atmospheric CO2 43 walruses 43 eutrophication 43 sediment 43 Little Ice Age 43 ice melts 43 Amazon rainforest 43 ozone depletion 43 greenhouse gas concentrations 43 gullies 43 upwelling