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(Click for frequent words.) 66 McMurdo Dry Valleys 64 abyssal plain 63 microbialites 62 Transantarctic Mountains 62 hydrosphere 61 Vatnajökull 61 Dry Valleys 61 Syrtis Major 60 Mount Bosavi 60 abyssal plains 60 Nunavut Territory coal 59 permafrost melts 59 Ontario Lacus 59 THEMIS Image 59 Terra Meridiani 59 Himalayan river basins 59 Palaeozoic sedimentary 58 Toolik Lake 58 sub glacial lakes 58 hot springs geysers 58 Polar Regions 58 COROT 7b 58 glaciers icebergs 58 subglacial lakes 58 melting glacial 58 Geologically speaking 58 Tropical rainforests 58 Hellas Planitia 58 bison lumbered 58 Methane hydrates 58 Andean snowmelt 57 Amundsen Sea 57 Prydz Bay 57 Jupiter moons Europa 57 oligotrophic 57 coldest driest 57 smoothest flattest 57 subglacial 57 lunar craters 57 Paleogene 57 Opposes drilling 57 Subarctic 57 mineral olivine 57 airglow 57 Antarctic Dry Valleys 57 karst limestone 56 cratered highlands 56 detritus perched 56 cyanobacterial blooms 56 Hellas Basin 56 boreal regions 56 forest meadows shrub 56 Walruses dive 56 creatures inhabiting 56 Larsemann Hills 56 mountainous Altai 56 Denisova cave 56 past boninite lavas 56 taiga forest 56 Valles Marineris 56 Whillans Ice Stream 56 Neptune Uranus 55 Ngauruhoe 55 evaporite deposits 55 permanently shadowed regions 55 Arabia Terra 55 freshwater lakes rivers 55 subsurface ocean 55 shadowed craters 55 dwelling invertebrates 55 polar plateau 55 bedrock outcrops 55 Lake Yoa 55 polar bears seals 55 Strathcona Fiord 55 alpine glaciers 55 thermal vents 55 walrus polar bears 55 cryosphere 55 clathrates 55 Chasma Boreale 55 Saturn Enceladus 55 biotope 55 multiuse trails waterfalls 55 lava flowed 55 Arsia Mons 55 lunar crust 55 Lake Vostok 55 Noctilucent clouds 55 AMASE 55 subseafloor 55 Terra Sirenum 55 lacustrine 55 bacterial mats 55 Hubble orbits 55 Gakkel Ridge 55 Research LTER 55 olivine mineral 55 Weddell Sea 55 Vastitas Borealis 55 Candor Chasma 55 microbial mats 54 refrozen ice 54 hypersaline 54 solidified lava 54 glaciated terrain 54 crunches underfoot 54 southern supercontinent 54 volcanically active 54 biodiverse ecosystems 54 subglacial lake 54 spruce fir forest 54 Norway Svalbard 54 polar mesospheric clouds 54 flood basalts 54 neutrino telescope 54 Sinus Meridiani 54 Mars Analog Svalbard 54 MGS Mars Orbiter Camera 54 Jellyfish swarm northward 54 antarctic 54 Milensky 54 conodonts 54 silicate rocks 54 Tharsis Rise 54 Bramley Murton 54 subalpine 54 Domoic acid neurotoxin 54 glacially carved 54 Mariana Arc 54 Succulent Karoo 54 moons Io 54 lunar equator 54 Permafrost 54 Ian McShane Pillars 54 blocks harmful ultraviolet 54 tidewater glaciers 54 Bellingshausen Sea 54 La Nina occurs 54 slushy crystalline form 54 seals walrus 54 Shiveluch 54 water vapor condenses 54 moisture condenses 54 soils sediments 54 Plesiosaurs 54 Explosive eruptions 54 Sermilik Fjord 54 tropopause 54 seafloor sediments 54 Methane hydrate 54 Svalbard islands 54 arctic tundra 54 Lake Lacawac 54 Dan Buhl Planetarium 54 Seafloor 54 Doomsday Seed Vault 54 atmospheric oceanic 54 Scientists Iceland Grimsvotn 54 icy moons 54 upland forests 54 Kamoamoa eruption 54 volcanic lava flows 54 Mercury magnetosphere 53 Ius Chasma 53 layered sedimentary rock 53 Galilean satellites 53 Olympus Mons 53 Chilean Atacama Desert 53 Jupiter icy moons 53 Kasatochi 53 Hardanger Fjord 53 receding glaciers 53 seafloor methane 53 colder denser 53 subpolar 53 Weddell seals 53 Eruptive activity 53 dwelling organisms 53 penguins seals 53 shallow weedy 53 moles voles 53 Martian polar 53 Valles Marineris canyon 53 Ronne Ice Shelf 53 Planitia 53 Norris Geyser Basin 53 terminal moraine 53 benthos 53 Appy Sluijs 53 Subglacial 53 Nihoa Island 53 deserts jungles 53 basaltic rocks 53 Sawmill Own 53 cryovolcanism 53 sharks sea turtles 53 overthrust belt 53 smoggy atmosphere 53 unexplored frontier 53 subarctic regions 53 Saharan Desert 53 northerly latitudes 53 Earthlike 53 presolar grains 53 ancient supercontinent 53 Socompa 53 tropical savannah 53 Corot 7b 53 Chajnantor 53 vexes travelers 53 Michael Studinger 53 Upsilon Andromedae b 53 Samuel Oschin Telescope 53 Yellowstone Caldera 53 permafrost thaws 53 infertile soils 53 Jupiter moon Io 53 Cryogenian 53 Arsenic occurs 53 Brigham Grette 53 tiny single celled 53 polynyas 53 Elevated concentrations 53 anomalously warm 53 undersea volcanoes 53 austral summer 53 glacier carved 53 icecaps 53 NASA rovers Spirit 53 Snake River Plain 53 Krafla 53 tall thick trunked 53 ocean basins 53 Vatnajokull 53 Everest Lhotse 53 volcano Olympus Mons 53 Triassic Jurassic 53 penetrating radar 53 lunar meteorites 53 porous sandstone 53 polar stratospheric 53 absorbs photons 53 upwelling currents 53 Spitsbergen 53 Stratospheric ozone 53 subarctic 53 Rossby waves 52 volcanic vents 52 admiral asks 52 Tumi geologist 52 yardangs 52 Zooplankton 52 Antartica 52 Kittlitz murrelet 52 Antarctica 52 Nili Fossae 52 eskers 52 molluscs crustaceans 52 extinct volcanoes 52 Kiruna Sweden 52 Gamburtsev 52 rubbly 52 noon Mendenhall Glacier 52 Eyjafjallajökull glacier 52 waterfalls caves 52 seafloors 52 Grímsvötn 52 seabed sediments 52 sedimentary deposits 52 hydrothermal vent 52 Antartic 52 receding glacier 52 polar craters 52 ecoregions 52 comets asteroids 52 hematite mineral 52 Vernal pools 52 Aram Chaos 52 montane 52 equatorial latitudes 52 tadpole shrimp 52 Qinghai Tibetan plateau 52 noctilucent cloud 52 Arctic permafrost 52 phyllosilicate 52 Svalbard archipelago 52 microscopic single celled 52 upper troposphere 52 Cerro Pachon 52 ostracods 52 El Chichon 52 solidified lava flows 52 equatorial waters 52 brownish haze 52 lava tubes 52 glaciological 52 Antarctic 52 Okataina 52 Gliese #G 52 nitrogen argon 52 deepwater corals 52 Cassini Finds 52 carbon fluxes 52 methane CH4 52 routinely sloughed off 52 WISE spacecraft 52 limestone karst 52 methane clathrates 52 towering icebergs 52 Hydrothermal Vents 52 hydrothermal springs 52 polar caps 52 Stagnant pools 52 southern latitudes 52 Snowball Earth 52 starfish sea urchins 52 semiarid regions 52 speleothems 52 Ny Ålesund 52 Endurance crater 52 sea hydrothermal vents 52 HiRISE image 52 driftless 52 Antarctic icecap 52 olivine rich 52 sunlight penetrates 52 volcanic ridges 52 Greenland Glaciers 52 albedo feedback 52 Puijila 52 Ice Coring 52 Astrological lore 52 temperate forests 52 Lava Flows 52 exosphere 52 Neutron stars 52 Pavonis Mons 52 propelling steaming blobs 52 Kraken Mare 52 Saturnian moon Titan 52 polar vortex 52 Io Europa 52 Exoplanets 52 icebergs calving 52 upwellings 52 Siberian Traps 52 magma boiling 52 Kermadec Arc 52 Extrasolar 52 warm interglacial periods 52 whiz harmlessly 52 glacial geology 52 Korkan target 52 moons orbiting 52 Khumbu glacier 52 phyllosilicates 52 biogeochemical 52 anthropogenic aerosols 52 drumlins 52 cinder cones 52 erupting lava 52 mantled 52 stalactites stalagmites 52 subtidal 52 lenticular clouds 51 sedge meadows 51 polar latitudes 51 Jakobshavn Isbrae 51 warmer wetter 51 radar altimetry 51 breeding waders 51 geochronology 51 Lophelia 51 driest continents 51 shallow depressions 51 upland meadows 51 methane seeps 51 Anvers Island 51 outwash 51 Taurus Littrow 51 Fashion Movie Reviews 51 Jonathan Lunine 51 tundra vegetation 51 downwelling 51 microbial ecosystems 51 mud volcanoes 51 limestone caverns 51 permafrost soils 51 Polar explorers 51 Banerdt 51 Middle Awash 51 atmospheric methane 51 crisscrossing canals 51 Weminuche 51 siliceous sediments 51 Seagrasses 51 Nankai Trough Zone 51 BLG #Lb 51 Mawrth Vallis 51 Super Earths 51 AERONET 51 snowcaps 51 permanently shadowed 51 swirling dust devils 51 colorless odorless radioactive 51 methane hydrates exist 51 Jamie Svrcek 51 Kelp forests 51 Warmer oceans 51 sedge meadow 51 Shuttle Atlantis undocks 51 mammals reptiles birds 51 waterfalls cascade 51 arctic plains 51 semidesert 51 Lake Cheko 51 contamination Nishiyama 51 volcanic basalt 51 gaseous planets 51 permanently shadowed lunar 51 comet nuclei 51 IRC +# 51 sub tropic 51 mudpots 51 Sheep graze 51 glaciers recede 51 lightless depths 51 Eyjafjallajokull Volcano 51 shrublands 51 hunting Kepler telescope 51 carbonaceous chondrites 51 amphipods 51 oceans airways 51 Lake Myvatn 51 Kilauea Iki 51 permafrost 51 phytoplankton blooms 51 sagebrush steppe 51 Solar TErrestrial RElations Observatory 51 Tatshenshini Alsek 51 icecap 51 subalpine meadows 51 Philippine volcano spews 51 luxuriant vegetation 51 impermeable shale 51 Society ProLiteracy 51 Perseus Cluster 51 martian rocks 51 geomicrobiology 51 Khumbu Glacier 51 scrub shrub 51 Brunt Ice Shelf 51 meteor impacts 51 windiest continent 51 affects hibernating bats 51 equatorial bulge 51 Shallower 51 Institute MBARI 51 opossum shrimp 51 salamanders snakes 51 Jurassic Cretaceous 51 FAR WEST TEXAS 51 equatorial regions 51 glaciers retreated 51 infrared spectral 51 Mont Blanc Massif 51 temperate latitudes 51 single celled algae 51 Habitable 51 stony meteorites 51 oceanic plates 51 Siple Dome 51 Greenhouse gases trap 51 volcanoclastic 51 ejecta blanket 51 Russia Kamchatka volcanoes 51 trans Neptunian 51 pyroclastics 51 rocky crevices 51 terraformed 51 called Abydosaurus mcintoshi 51 oceanic trenches 51 Maastrichtian 51 grabens 51 lunar orbiters 51 Surface Composition Spectrometer 51 EFIRE 51 Antarctica EPICA 51 Axel Heiberg Island 51 Cordillera Blanca 51 Josefino Comiso 51 greatest insect emergences 51 silicate mantle 51 active volcanism 51 moulins 51 almanac foresees near 51 polar oceans 51 sparse vegetation 51 Quaternary Period 51 Waning Ida downpours 51 polar 51 Corot 9b 51 Mike Taugher covers 51 refugia 51 tholins 51 chlorophyll fluorescence 51 Gas hydrates 51 planets atmospheres 51 fungus thrives 51 temperate rainforest 51 Kaminski Morrow 51 OMEGA instrument 51 syenite gneiss 51 Multiple wildfires scorch 51 Upsilon Andromedae 51 Photos Take gander 51 ionized hydrogen 51 Without functional ribosomes 51 insects amphibians 51 Pleistocene Ice Age 51 colluvial 51 sediments deposited 51 By Rossella Lorenzi 51 midlatitudes 51 interstellar cloud 50 ultracold temperatures 50 Disko Bay 50 Thermal Emission Spectrometer 50 sulfidic 50 Fram Strait 50 supervolcanoes 50 grasslands woodlands 50 Frederic Pont 50 constellation Eridanus 50 THEMIS Images 50 insects crustaceans 50 HD#b 50 megacryometeor 50 tectonically active 50 basalt volcanic 50 dormant spores 50 Muchachos Observatory 50 van Arkel discovery 50 Laptev Sea 50 changeable cloudy 50 Pu'u O'o crater 50 molten magma 50 magma erupts 50 glaciers 50 coastal upwelling 50 Hiker survives 50 acidic oceans 50 interstellar boundary 50 Shuttle Discovery blasts 50 planet Gliese #g 50 geology hydrology 50 hotsprings 50 coccolithophores 50 Nature Geosciences 50 volcanic arcs 50 Kauai Na Pali 50 single celled microorganisms 50 dimming starlight 50 magma mixing 50 katabatic winds 50 Cretaceous periods 50 volcanic lava 50 Deccan Traps 50 mesosphere 50 Namib Desert 50 saline aquifers 50 Reykjavik Excursions 50 mosses lichens 50 tropic regions 50 mineralogical composition 50 toads salamanders 50 Haughton Crater 50 blizzards thundersnow 50 retrograde orbit 50 wolverine habitat 50 Taimyr Peninsula 50 Columbia Icefield 50 Daisetta sits 50 Saturn Uranus Neptune 50 Dumont d'Urville station 50 Troodos Ophiolite Complex 50 Hamish Pritchard 50 Eelgrass 50 Advanced Microwave Scanning 50 Antarctica Amundsen 50 Martian craters 50 grasses mosses 50 ecoregion 50 Detailed geological mapping 50 mesospheric 50 Navajo Sandstone 50 Dumont d'Urville scientific 50 terrestrial ecosystems 50 LSB Leakey Foundation 50 supercooled liquid 50 cosmic ray intensity 50 Siberian Arctic 50 gypsum crystals 50 Warmer drier 50 Global Precipitation Climatology 50 Outcrops 50 Cometary 50 overlying layers 50 Mount Zirkel Wilderness 50 antarctic ice 50 El Teide 50 Himalaya Karakoram 50 sponges crabs 50 evaporite 50 autonomous Xinjiang Uyghur 50 talus slopes 50 halite 50 Elysium Planitia 50 larch forests 50 Nares Strait separating 50 humid tropics 50 Halema'uma'u 50 calderas 50 use hovering zeppelin 50 hyper saline 50 Landsat satellite 50 gravelly sandy 50 laser altimetry 50 forecaster Helen Chivers 50 Halemaumau 50 Longyearbyen Norway 50 retreating glaciers 50 Paleocene Eocene 50 Shuttle Docks 50 Follett Pillars 50 Space Environment Geochemistry 50 outer corona 50 Grímsvötn volcano 50 dense rainforests 50 oceanic crust 50 Descent Imager Spectral Radiometer 50 fissure eruption 50 poleward shift 50 Hindu Kush Himalaya 50 Cosmic Microwave Background 50 Lava flows 50 topographical characteristics 50 sulfate minerals 50 extrasolar 50 Gamma ray burst 50 aerosol concentrations 50 Dronning Maud Land 50 comets orbiting 50 Caltech manages 50 lunar magma 50 MONTROSE Holistic Health 50 Trails Illustrated 50 bedrock outcropping 50 zooplankton species 50 Europa Ganymede 50 glaciers receded 50 Storing carbon dioxide 50 structural stratigraphic 50 mantle convection 50 chasing shad 50 Argentina Perito Moreno 50 situ measurements 50 Exoplanet 50 Otto Bliesner 50 penetrating electromagnetic 50 glaciers melt 50 arid semi arid 50 Laurentide ice sheet 50 chromosphere 50 Astronomers Find 50 Venusian atmosphere 50 Adélie penguins 50 rhinos lions 50 permanently shadowed craters 50 smoothest flattest spot 50 Starz Pillars 50 dirty snowballs 50 unicellular algae 50 meteor craters 50 Alaskan glaciers 50 Duties Lazing around 50 Pocket gophers 50 inundate coastal 50 Antarctic fur seals 50 photosphere 50 Cenozoic Era 50 Alpine glaciers 50 Taurus Littrow Valley 50 pupae consume 50 Saturn moon Enceladus 50 Cenozoic era 50 Balarat Project 50 giant squid Architeuthis 50 waters teem 50 flatfishes 50 extensive Paleozoic Selwyn 50 paleontology geology 50 pyroclastic surges 50 Bumpass Hell 50 unicellular organisms 50 intermediate metavolcanics 50 Cenozoic 49 kept mountainous snowbanks 49 larvae burrow 49 coniferous forest 49 moon Europa 49 icesheets 49 saline formations 49 claystone 49 glaciers retreating 49 Hawaii Mauna Kea 49 TrES 4 49 cratons 49 Hydrothermal vents 49 Cyanobacteria 49 Plate Tectonics 49 Antarctic glacier 49 gushing waterfalls 49 tarns 49 Paisley Caves 49 Nares Strait 49 frigid polar 49 brown hyena 49 Laramidia 49 Extrasolar Planet 49 vast Myrdalsjokull ice 49 polar regions 49 Ice Melts 49 Vostok Station 49 glaciated 49 Scattered largemouth 49 volcanic moon Io 49 deforestation desertification 49 Halifax Weather Overcast 49 Bok globules 49 Moderate Resolution Imaging 49 erodable 49 basaltic lava 49 Spitzbergen 49 Saturn moon Mimas 49 Nikku Madhusudhan 49 arsenic munching microbe 49 Marysvale District 49 NASA THEMIS 49 Cape Royds 49 Abisko 49 basalt rock 49 Melting glaciers 49 AP Interview CG 49 Subduction zones 49 fiords 49 Nyiragongo 49 Grimsvotn lies 49 Ashrat Shafiq Mohammed 49 marine sediments 49 VIRTIS instrument 49 hydrologic cycle 49 terrestrial biosphere 49 Capt. Chop Lege 49 stratospheric clouds 49 Ruggles Reef 49 Tianshan Mountain 49 perforations #,#-#,# feet [001] 49 chemosynthetic 49 Dying jellyfish 49 glacial fjord 49 Navy copter crashes 49 briny fluid 49 mass beachings 49 Snow buntings 49 Foja Mountains 49 Qinghai Tibet plateau 49 Dig unearths 49 Saturn moons Enceladus 49 microhabitats 49 fumaroles 49 chondritic meteorites 49 polygon patterns 49 deepest darkest abyss 49 mega vertebrate 49 Disko Island 49 methanogenic bacteria 49 lush tropical rainforests 49 Coweeta 49 Hesperian Epoch 49 Ny Alesund 49 planetary Transits 49 Hardangervidda 49 evaluate EM conductors 49 GJ#b 49 water striders 49 magnetospheric 49 equatorial Pacific Ocean 49 gamma ray observatory 49 Haute Route 49 spiny anteater 49 seafloor sediment 49 steam eruptions 49 glacial meltwater 49 Gusev crater 49 alluvial plains 49 Periodical cicadas 49 discover Fomalhaut 49 smallest marsupials 49 deca BDEs 49 barium strontium 49 penguin rookery 49 Mars Uranus 49 coastal headlands 49 Glaciology 49 Branson Zipline & 49 Aletsch 49 HiRISE camera aboard 49 whales sea lions 49 midlatitude 49 inhospitable environments 49 shaded craters 49 terrestrial mammals 49 Okmok Caldera 49 trap antimatter atoms 49 Svartsengi 49 Isidis Planitia 49 methanogenic 49 tropical subtropical 49 Accuweather predicts 49 warmer latitudes 49 joins rovers Spirit 49 Indonesian volcano spews 49 ocean ridges 49 duration spaceflights 49 asteroseismology 49 interferometric synthetic aperture radar 49 aquatic insect 49 jarosite 49 Polycyclic aromatic hydrocarbons 49 forams 49 Changcheng Station 49 Cassini Image 49 picturesque coves 49 Laurentide Ice Sheet 49 heavily cratered 49 Caloris 49 Venus Jupiter Uranus 49 ferruginous 49 arid regions 49 deep convective clouds 49 equatorial belt 49 starfish crabs 49 snailfish 49 Lower Geyser Basin 49 Laurasia 49 Lo'ihi 49 chlorine monoxide 49 cirques 49 glaciology 49 Martian subsurface 49 springtime ozone 49 noctilucent clouds 49 bird watcher paradise 49 underwater volcanos 49 moon Phobos 49 birds amphibians reptiles 49 Chajnantor plateau 49 pillow lava 49 intertidal 49 Anthony Remijan 49 Kangerlussuaq Greenland 49 rocky intertidal 49 Casas Geo subdivision 49 Beardmore Glacier 49 apparitions afflicting 49 geodynamic 49 crystalline solids 49 rock ledges 49 crustaceans mollusks 49 Earth Observation EO 49 tinder dry Nicklin 49 Ross Ice Shelf 49 verdant forests 49 Uranus Jupiter 49 heterotrophic 49 Planetary Transits 49 Martian dunes 49 Narwhals 49 tundras 49 abyssal 49 Sphagnum 49 Climber dies 49 Alaskan tundra 49 Martian terrain 49 Jan Mayen 49 HARPS instrument 49 isopods 49 pygmy mammoth 49 Pahranagat 49 Birimian Greenstone Belt 49 Sechura Desert 49 telescopic observations 49 ancient lava flows 49 moonlike 49 boreal chickadee spend 49 arctic permafrost 49 jungles deserts 49 Biogeography 49 JPL manages 49 near Sahkalin Island 49 Charcot Island 49 lowland rainforests 49 Stephan Quintet 49 Partly cloudy breezy 49 Cape Adare 49 diatom species 49 Niwot Ridge 49 Climate Sounder 49 aragonite 49 Yellowstone geysers 49 Altai mountains 49 Flush toilets 49 drifting ice floe 49 pteropod 49 Katharine Willett 49 Submersibles 49 Atlantis Undocks From 49 woodland grassland 49 angular boulders 49 Polar bears depend 49 icefield 49 Kristin Laidre 49 North Greenland Eemian 49 icebergs scour 49 risks tainting pristine 49 beaver lodges 49 pliosaur ferocious predator 49 granodiorite porphyry 49 rocky extrasolar planet 49 Melting Glaciers 49 cenospheres 49 Geminid shower 49 Spinney Mountain 49 terra preta 49 Tony Bayaoa whose 49 shallow continental shelf 49 mixed conifer forests 49 Larsen Ice Shelf 49 Spitsbergen Norway 49 Alpine Ascents Everest 49 geothermal gradient 49 circumpolar Arctic 49 marine ecologists 49 planets Uranus 49 waves gently lapping 49 Jukkasjarvi 49 marshes swamps 49 Damaraland 49 spacecraft orbited 49 pinon pine 49 Oregon Wallowa Mountains 49 Cretaceous Jurassic 49 Igor Semiletov 49 Permo Triassic 49 foehn 49 Jura mountains west 49 Terre Adelie 49 Ocean Salinity 49 Fedotenko skated 49 Mars Meridiani Planum 49 polar bears caribou 49 lunar soil 49 Ionosphere Sounding 49 solar prominences 49 Mono Lake 49 celled organisms 49 Campesino Norte 49 pyroxene 49 volcanoes erupt 49 beech forests 49 Annamites 49 glacial interglacial 49 REE enriched 49 Hydrates 49 mid latitudes 49 Ruwenzori Mountains 49 alpine ecosystems 49 palaeo 49 Shuttle Discovery docks 49 silicate grains 49 Mostly Cloudy Currently 49 sulfur oxides nitrogen oxides 49 Jakobshavn Glacier 49 polar bears penguins 49 Mars Neptune Uranus 48 Lake Alaotra 48 Coma Cluster