Related by context. Frequent words. (Click for all words.) 62 glaciers 62 Antarctic ice 60 polar ice 59 Greenland ice 58 tundra 58 glacier 57 glacial ice 57 peat bogs 57 Arctic Ocean 56 polar regions 54 volcanism 53 meltwater 53 sediments 53 Earth crust 53 polar 52 subsurface 52 boreal forest 52 Arctic 52 Antarctica 52 plate tectonics 52 earth crust 52 geological formations 52 glacial 51 Antarctic Peninsula 51 geologic 51 atmospheric CO2 51 arctic 51 atmospheric carbon dioxide 51 peatlands 50 peat bog 50 sedimentary rock 50 melting ice 49 seafloor 49 Antarctic 49 melting 49 Greenland 48 methane 48 mammoths 48 sediment 48 boreal 48 magma 47 volcanic activity 47 Svalbard 47 Ellesmere Island 47 Glaciers 47 sedimentary rocks 47 crust 47 seabed 47 ice melts 47 melting glaciers 47 geologically 47 soils 47 water vapor 46 snowpack 46 Martian surface 46 subduction zone 46 volcanic eruptions 45 hydrothermal 45 Arctic Circle 45 greenhouse gas concentrations 45 molten rock 45 carbon dioxide 45 geological 45 lava flows 44 volcanoes 44 sedimentary 44 Spitsbergen 44 albedo 44 Pleistocene 44 Little Ice Age 44 latitudes 44 Tibetan plateau 44 deformation 44 basalt 44 ecosystems 44 carbon sinks 44 subsidence 44 Martian soil 44 lava 44 troposphere 43 Martian atmosphere 43 upwelling 43 hydrothermal vents 43 acidification 43 oceans 43 volcanic 43 biosphere 43 tectonic 43 ice 43 Barents Sea 42 Ice Age 42 lichen 42 Geophysical Research 42 gigatons 42 Enceladus 42 ozone depletion 42 ozone layer 42 mountain ranges 42 lava dome 42 snowpacks 42 northern latitudes