Related by context. All words. (Click for frequent words.) 62 permafrost 62 Arctic permafrost 59 Lake Vostok 59 sub glacial lakes 58 subsurface ocean 57 Puijila 57 methane clathrates 56 seafloor sediments 56 Greenland glacier 56 lunar craters 56 subglacial lakes 56 shadowed craters 56 Paleocene Eocene Thermal Maximum 55 Cryogenian 55 iridium layer 55 fossilized skull 55 permafrost thaws 55 Hesperian Epoch 55 Denisova Cave 55 cryovolcanism 55 woolly mammoths 54 Otzi 54 woolly rhinoceros 54 Denisova cave 54 steppe mammoth 54 boreal regions 54 conodonts 54 woolly mammoth 54 panda sperm 54 Greenland icesheet 54 mammal fossils 54 Woolly mammoths 53 magma ocean 53 glaciation 53 ostracods 53 Fossilised 53 permanently shadowed craters 53 Antarctic icecap 53 COROT 7b 53 Willerslev 53 antarctic ice 53 clathrates 53 wooly mammoth 53 receding glacier 53 Neanderthal fossils 53 lunar meteorites 53 Ontario Lacus 53 permafrost soils 53 Laurentide ice sheet 53 Siple Dome 53 Siberian tundra 52 Permian Period 52 coprolites 52 Antarctic glacier 52 Casas Geo subdivision 52 mammoths 52 permafrost melts 52 Arctic icecap 52 Snowball Earth 52 Younger Dryas 52 deglaciation 52 Woolly mammoth 52 interglacial period 52 Antarctic ice 52 Alpine glaciers 52 solidified lava 52 Martian meteorite 52 Ice Age mammals 52 ALH# 52 Lyuba 52 subglacial 52 extinct woolly mammoth 52 KT boundary 52 lunar crust 52 Toba eruption 52 Permian Triassic extinction 52 earliest hominid 52 Siberian mammoth 52 marine sediments 52 Siberian Traps 51 horned dinosaur 51 Permafrost 51 melting glacier 51 seabed sediments 51 microfossils 51 Iguanodon 51 Ötzi 51 icecaps 51 sediments deposited 51 glaciations 51 smallest exoplanet 51 Argentinosaurus 51 dinosaur species 51 methane hydrates 51 extinct mammal 51 Colossal squid 51 PHOTOS Otzi 51 sedimentary deposits 51 lunar soil 51 Cryogenian period 51 Antarctic ozone 51 Neanderthal bones 51 atmospheric methane 51 Sarahsaurus 51 hominid fossils 51 Pliocene epoch 51 microbial organisms 50 Pleistocene Ice Age 50 fossilized dinosaur bones 50 Herod tomb 50 juvenile Columbian mammoth 50 missing baryons 50 Laurasia 50 nicknamed Ardi 50 Methane hydrates 50 Corot 7b 50 Svalbard islands 50 moon Enceladus 50 basaltic rock 50 steppe bison 50 mammoths roamed 50 sheet Summerhayes 50 VY Canis Majoris 50 rubbly 50 stromatolite 50 Martian craters 50 glacial ice 50 Siberian mammoths 50 dinosaur extinction 50 equatorial regions 50 semidesert 50 Ayles Ice Shelf 50 Permian extinction 50 fossil specimens 50 primitive organisms 50 Himalayan Glaciers 50 Neanderthal teeth 50 moulins 50 fossilized pollen 50 cratons 50 fossils unearthed 50 Chazy Reef 50 dinosaur fossils 50 martian rocks 50 Martian volcanoes 50 flood basalts 50 arctic permafrost 50 sauropod dinosaur 50 Oetzi 50 Ziegler Reservoir 50 Hesperian epoch 50 Irvingtonian period 50 basalt lava 50 Appy Sluijs 50 mineral olivine 50 volcanism 50 radiocarbon dated 50 hominid fossil 50 Jupiter moons Europa 50 Dry Valleys 50 mud volcanoes 49 fossils dating 49 Himalaya glaciers 49 meteorite fragments 49 Ediacaran 49 silicate rocks 49 Liang Bua 49 partial skeleton 49 Klekociuk 49 Alaskan permafrost 49 dustier stormier atmosphere 49 Pleistocene Epoch 49 Hydrates 49 Fossilized 49 supervolcano 49 Weddell Sea 49 VIDEO Egyptian mummies 49 fossilized creatures 49 stegosaur 49 Antarctic ozone layer 49 green alga Chlamydomonas 49 Cenozoic Era 49 meteor impacts 49 fossilized dinosaur 49 fossilized dinosaur eggs 49 moon Mab 49 Deccan Traps 49 particle smasher 49 bonebed 49 icy crust 49 Antarctic glaciers 49 Murchison meteorite 49 Thawing permafrost 49 Tunguska meteorite 49 birdlike dinosaur 49 Big Bang Machine 49 sulfur isotope 49 ° C warmer 49 Io volcanoes 49 mammoth tusk 49 Holocene epoch 49 paleomagnetic 49 mammoth tusks 49 mitochondrial genome sequence 49 thawing tundra 49 exquisitely preserved 49 sauropod skulls 49 mammal extinctions 49 ferric oxides 49 thawing permafrost 49 refrozen ice 49 forams 49 subglacial lake 49 trilobite fossils 49 KT extinction 49 Guatemala sinkhole 49 phytoliths 49 earliest tetrapods 49 Warmer oceans 49 sauropod dinosaurs 49 Radiocarbon dating 49 Sauropod 49 ichthyosaur 49 Zeebe 49 supercontinents 49 prehuman 49 nematode Caenorhabditis elegans 49 saline aquifers 48 Yixian Formation 48 Martian permafrost 48 abyssal plain 48 megafauna 48 microbialites 48 rotifer 48 saber toothed vegetarian 48 kept mountainous snowbanks 48 braincase 48 Paranthropus robustus 48 Greenland glaciers 48 WASP #b 48 Eocene epoch 48 Greenland ice 48 Eocene Epoch 48 Turiasaurus 48 spicule 48 Osedax 48 ancient supercontinent 48 Greenland Ice 48 Mojzsis 48 Triassic Period 48 disappearing glaciers 48 Columbian mammoth 48 lain undisturbed 48 Ancient tomb 48 southern supercontinent 48 stony meteorite 48 fossilized feces 48 carbonate minerals 48 interglacial periods 48 Melting glaciers 48 retreating glaciers 48 dino bones 48 midlatitudes 48 Cambrian Period 48 coral skeletons 48 Antarctic penguins 48 Lake Untersee 48 sedimentary layers 48 Jovian moon 48 coprolite 48 Ground penetrating radar 48 fossilized dinosaur dung 48 coccolithophores 48 shoulder adhesive capsulitis 48 fossils 48 icesheets 48 Greenland Glaciers 48 methane hydrate 48 Homo sapiens evolved 48 phyllosilicate 48 hydrate deposits 48 supervolcanoes 48 Jean Pierre Bibring 48 Fomalhaut b 48 volcanic basalt 48 sterile neutrino 48 tardigrades 48 hadrosaurs 48 supercontinent 48 geochronology 48 Jørn Hurum 48 Saturn Enceladus 48 polar icecap 48 Tunguska explosion 48 Antarctica 48 Ice Age fossils 48 Laramidia 48 Shiveluch 48 Petermann Glacier 48 Transantarctic Mountains 48 molten magma 48 radiocarbon 48 icecap 48 Bristlecone pines 48 Gas hydrates 48 Hadar Ethiopia 48 extinct mammoths 48 Asilisaurus 48 hadrosaur 48 Patagonian glaciers 48 undersea volcanoes 48 mummified dinosaur 48 melting icebergs 48 Pleistocene era 48 long necked sauropod 48 Qinghai Tibet plateau 48 McMurdo Dry Valleys 48 fossilized bone 48 shadowy craters 48 Gigantopithecus 48 glacial 48 Chicxulub impact 48 Jurassic Period 48 duckbilled dinosaurs 47 methanogenic bacteria 47 fossilized 47 glaciers receded 47 moons orbiting 47 Europasaurus 47 multicellular creatures 47 Homo ergaster 47 Qesem Cave 47 carbonate globules 47 Rancho La Brea 47 Quaternary Period 47 hominid skeleton 47 Antarctica EPICA 47 fossilized skeleton 47 magnetite crystals 47 Nicholas Conard 47 Burgess Shale 47 mastodon bones 47 polar ice 47 Permian Triassic 47 Anthony Barnosky 47 ankylosaur 47 Neutron stars 47 glacial meltwater 47 dromaeosaurs 47 Gamma ray burst 47 Kilimanjaro glaciers 47 Pleistocene Age 47 glacier calving 47 bristlecone pine trees 47 polar craters 47 antarctic 47 #.#C #.#F [003] 47 tholins 47 Plate tectonics 47 saline aquifer 47 ivory flutes 47 neutrino physics 47 bird Archaeopteryx 47 Nectocaris 47 phyllosilicates 47 Cape Royds 47 basaltic lava 47 microfossil 47 thermal vents 47 Gondwanaland 47 hominid species 47 geologically active 47 yardangs 47 Connie Arzigian 47 Terra Sirenum 47 Antarctic Dry Valleys 47 Raptorex kriegsteini 47 mollusk shells 47 glaciers melting 47 paleontological discoveries 47 Ice Age beasts 47 Ordovician extinction 47 Sauropods 47 Luterbacher 47 Lop Nur 47 deca BDEs 47 Linhenykus 47 dwarf hippos 47 Last Glacial Maximum 47 Eemian 47 fossilized footprints 47 prehistoric mammals 47 Gisela Winckler 47 Sermeq Kujalleq 47 glacial melting 47 seafloors 47 sulfur isotopes 47 melting permafrost 47 Ice Age mammal 47 Jurassic era 47 Basilosaurus 47 Syrtis Major 47 polar caps 47 geomicrobiology 47 arctic plains 47 abyssal plains 47 Scientists theorize 47 fossil 47 solar nebula 47 planktonic foraminifera 47 ancient hominid 47 duckbilled dinosaur 47 sediment cores 47 journal Geology 47 Antarctic Ice Shelf 47 speleothems 47 saber tooth cats 47 Mesonychoteuthis hamiltoni 47 hydrated silica 47 fossilized teeth 47 Antarctic meteorites 47 Denisovan 47 Repenomamus robustus 47 Saturn moon Enceladus 47 Plateosaurus 47 spacecraft flyby 47 circular particle accelerator 47 Dinosaur fossils 47 long necked sauropods 47 melting glacial 47 salt crystals 47 diplodocus 47 palaeo 47 anomalously warm 47 herbivorous dinosaur 47 Sumatra Andaman earthquake 47 methane seeps 47 unthawed 47 Keeling Curve 47 Peat bogs 47 paleoenvironmental 47 saber tooth cat 47 GJ #b [001] 47 warship Vasa 47 Mammuthus 47 Mars Meridiani Planum 47 necked plesiosaur 47 flint artifacts 47 frozen 47 southern latitudes 47 dinosaur specimens 47 tiny single celled 47 neutrino telescope 47 alpine glaciers 47 Paleozoic era 47 polar icecaps 47 Saturn outermost ring 47 bacterial mats 46 woolly rhino 46 marine reptile 46 Paranthropus 46 calderas 46 Willamette meteorite 46 interstellar dust grains 46 Neandertal 46 Tagish Lake meteorite 46 Jakobshavn 46 tadpole shrimp 46 Tarbosaurus 46 ostracodes 46 Gusev crater 46 Massospondylus 46 Martian meteorites 46 springtime ozone 46 Martian polar 46 Shakhova 46 interglacial 46 isotope composition 46 bison lumbered 46 microscopic creatures 46 Tharsis Rise 46 hyena dung 46 dinosaur skulls 46 foraminifera 46 deep convective clouds 46 mastodon tusk 46 polar 46 Patagonian Andes 46 Mount Bosavi 46 isostatic rebound 46 Gawis 46 Thermus aquaticus 46 Martian soil 46 Goldilocks planet 46 Palaeocene Eocene Thermal Maximum 46 archaea 46 Noachian era 46 Younger Dryas cold 46 hydrated minerals 46 microbial mats 46 Laurentide Ice Sheet 46 liquid ethane 46 Gran Dolina 46 Rignot 46 southernmost continent 46 Giganotosaurus 46 basalt volcanic 46 colliders 46 headless skeletons 46 tundra vegetation 46 Service WGMS 46 Plesiosaurs 46 superheavy elements 46 Quaoar 46 archaic ungulates 46 Meridiani 46 windblown sand 46 galactic alignment 46 unmelted 46 Stephane Udry 46 Genyornis 46 warmings 46 reinhardtii 46 Titan smoggy 46 Adélie penguins 46 Bronze Age civilization 46 pygmy mammoth 46 cosmic collisions 46 concretions 46 Brigham Grette 46 glacial retreat 46 pink iguana 46 Celsius #.#F 46 planet HD #b 46 subarctic regions 46 supercooling 46 glaciers retreated 46 sauropodomorphs 46 subpolar 46 meteorite impacts 46 carbon dioxide concentrations 46 sea scorpions 46 gaseous planet 46 plesiosaurs 46 geoneutrinos 46 Konrad Steffen 46 Ice Age 46 single celled algae 46 Gakkel Ridge 46 pre biotic 46 Nili Fossae 46 Greenland icecap 46 seafloor methane 46 warmer wetter 46 multicellular animals 46 Neogene 46 gas hydrates 46 lake sediments 46 ocean basins 46 molar tooth 46 Tawa hallae 46 prebiotic molecules 46 volcanic lava flows 46 FOLOTYN folate analogue 46 Gohar Tepe 46 Nomura jellyfish 46 magnetic monopoles 46 barred owls migrated 46 Lomonosov ridge 46 Earthly contamination 46 Miocene Epoch 46 Cretaceous Tertiary boundary 46 Ayles shelf 46 pteropod 46 melting 46 mya 46 meteorite bombardment 46 exo planet 46 glacier 46 evaporite deposits 46 Svalbard archipelago 46 mountain snowpacks 46 dinosaur fossil 46 giant squid Architeuthis 46 substorm 46 cenospheres 46 permanently shadowed regions 46 Kostenki 46 microscopic crystals 46 fossilized skeletons 46 curved tusks 46 carbon isotopes 46 Psittacosaurus 46 Paisley Caves 45 Doushantuo Formation 45 -# degrees Fahrenheit [002] 45 glaciers melted 45 basaltic rocks 45 Aram Chaos 45 supervolcano eruption 45 primordial ingredients 45 Amundsen Sea Embayment 45 martian meteorites 45 lunar magma 45 Polycyclic aromatic hydrocarbons 45 Wilkins Ice Shelf 45 glaciers 45 stratospheric clouds 45 Palaeozoic sedimentary 45 porous sandstone 45 mantle lithosphere 45 Maunder minimum 45 Oligocene epoch 45 geological timescale 45 permafrost degradation 45 hydroxyl molecules 45 Capricorn Glacier 45 forecaster Helen Chivers 45 vexes travelers 45 jarosite 45 Gliese #c 45 asthenosphere 45 Neoproterozoic 45 Upsilon Andromedae b 45 undersea plumes 45 Julienne Stroeve 45 interstellar dust particles 45 insect larva 45 invertebrate animals 45 tyrannosaurids 45 Puertasaurus 45 Greenland Antarctica 45 cantaloupe sized 45 Opportunity rover 45 Jupiter moon Io 45 cave stalagmites 45 Chilean Atacama Desert 45 lunar regolith 45 bryozoan 45 Eric Rignot 45 peat bogs 45 Palaeontologists 45 yields monster millipedes 45 Columbian mammoths 45 Martian dust 45 mitochondrial genome 45 feathered dinosaurs 45 cometary dust 45 underground aqueducts 45 stony meteorites 45 Blombos Cave 45 hominid footprints 45 Microorganisms 45 atmospheric carbon dioxide 45 Beardmore Glacier 45 asteroids orbiting 45 NSIDC 45 ramidus 45 Lauterbach charred corpse 45 African clawed frog 45 prehistoric lizard 45 permanently shadowed lunar 45 volcanic craters 45 Great Aletsch Glacier 45 permanently shadowed 45 T.rex 45 graphite whiskers 45 unicellular 45 ANI Archaeologists 45 Ross Ice Shelf 45 CERN experiments 45 TrES 4 45 Laetoli Tanzania 45 BLG #Lb 45 mammoth ivory 45 Spinosaurus 45 ship Akademik Fyodorov 45 icy comets 45 cu Oase 45 left Midwesterners shivering 45 SuperCroc 45 chemically processed 45 Herto 45 moon Europa 45 steam eruptions 45 Arctic tundra 45 fossilized remains 45 glaciers melt 45 Triceratops skull 45 Dakosaurus andiniensis 45 olivine mineral 45 Fram Strait 45 chlorosomes 45 Dinosaur Cove 45 isotopic compositions 45 Gamburtsev 45 Linheraptor 45 Confuciusornis 45 Antarctic Peninsula 45 Arabidopsis genome 45 subarctic 45 journal Meteoritics 45 primate evolution 45 collapsing sand dune 45 ammonia hydrates 45 Late Paleozoic 45 Martian dunes 45 NASA Isabella Velicogna 45 Paleolithic era 45 Amundsen Sea 45 yeti crab 45 Oort Cloud 45 thawed 45 P. boisei 45 saline formations 45 radiocarbon dating 45 Super Earths 45 loess 45 saber tooth tiger 45 primate fossil 45 glowing jellyfish 45 tsunamis recur 45 Chacaltaya glacier 45 Mistaken Point 45 VD# [001] 45 Mapusaurus 45 bristlecone pines 45 iceberg calving 45 Rugops 45 Quelccaya ice cap 45 formamide 45 Sturtian 45 extinct mammals 45 cataclysmic eruption 45 sedimentary rock 45 Lake Yoa 45 snowcap 45 Terre Adelie 45 damaging ultraviolet radiation 45 Dikika 45 erectus skulls 45 species Ardipithecus ramidus 45 GJ#b 45 skeletons skulls 45 lander robotic arm 45 Liquid nitrogen 45 diatoms 45 Mesozoic mammal 45 radioactive nuclei 45 Mount Tambora 45 Repenomamus 45 glacier shrinkage 45 Mariana Arc 45 Hebior mammoth 45 Fossilized bones 45 polar plateau 45 duckbill dinosaur 45 CoRoT 9b 45 macrofauna 45 temperature reconstructions 45 continuously erupting volcano 45 Ediacaran Period 45 archeologists unearthed 45 Alpine glacier 45 Earthlike planets 45 Sedimentary rocks 45 methane hydrate deposits 45 Igor Semiletov 45 mitochondrial genomes 45 megafauna extinction 45 Geomyces destructans 45 radiocarbon dates 45 Martian rocks 45 Otto Bliesner 45 Cosmic Microwave Background 45 Hot Jupiters 45 sulfate minerals 45 Fermilab Tevatron 45 Trudy Wohlleben 45 metazoans 45 icesheet 45 Homo neanderthalensis 44 volcanoes spewing 44 glacial interglacial cycles 44 floresiensis 44 thawing 44 mitochondrial DNA mtDNA 44 kerogen 44 Whillans Ice Stream 44 Zhoukoudian 44 glaciers retreating 44 huxleyi 44 Nares Strait 44 Himalayan glacier 44 abnormal chromosomes 44 turbidites 44 Cretaceous Tertiary KT 44 Eske Willerslev 44 Jay Famiglietti 44 dynamical processes 44 Jaekelopterus 44 Velicogna 44 plesiosaur 44 bedrock outcrops 44 oxygen isotopes 44 D. radiodurans 44 Neolithic Age 44 Maastrichtian 44 unicellular algae 44 Venusian atmosphere 44 geological epoch 44 downwelling 44 CoRoT 7b 44 absorbs CO2 44 assassin spiders 44 planetesimals 44 Castorocauda 44 dieoff 44 explosive volcanism 44 lithosphere 44 Argentavis 44 fossilized claw 44 neutrino detector 44 sized scorpions colossal 44 coolings 44 Cenozoic 44 Permian Triassic boundary 44 placental mammals 44 evaporite 44 biomineralization 44 unconventional superconductivity 44 comet nuclei 44 Jellyfish swarm northward 44 bleached corals 44 supersymmetric particles 44 Kuiper Belt object 44 called lobate scarps 44 Radiocarbon 44 pteropods 44 Pleistocene 44 lavas 44 thermophiles 44 roseum 44 underwater Lomonosov Ridge 44 prehistoric fossils 44 silicon monoxide 44 megadroughts 44 chlorine monoxide 44 topmost layer 44 biosignatures 44 Eyjafjallajökull erupted 44 Gryposaurus monumentensis 44 thermohaline circulation 44 seminiferous tubules 44 Natalie Mahowald 44 Molten rock 44 emits X rays 44 P. robustus 44 Dromomeron 44 cow rumen 44 Archaeologist Petr Veleminsky 44 prehistoric reptile 44 fearsome Tyrannosaurus rex 44 Aardonyx celestae species 44 protoplanetary disk 44 Oort cloud 44 doomsday vault 44 Glaciologists 44 Gondwana supercontinent 44 Sergey Grishin director 44 nematode worm 44 anthropogenic CO 44 multi celled 44 icebergs calving 44 molecule buckminsterfullerene 44 Lophelia 44 halite 44 Quelccaya 44 fossil primate 44 protoplanets 44 bdelloids 44 bony fishes 44 lineages diverged 44 Nunavut Territory coal 44 sunlike star 44 atmospheric CO2 levels 44 Gliese #G 44 impermeable shale 44 fossilized shells 44 equatorial latitudes 44 plate tectonics 44 Martian crater 44 species Australopithecus sediba 44 Jupiter icy moons 44 renowned astrophysics observatory 44 moon permanently shadowed 44 Sinus Meridiani 44 zircons 44 terrestrial mammal 44 thinning ozone layer 44 Oviraptor 44 Chicxulub 44 layered bedrock 44 taiga forest 44 Ellesmere Island 44 microlensing 44 polar explorer Ernest Shackleton 44 Laetoli 44 Camarasaurus 44 Gliese #g 44 ovary tissue 44 western Siberia 44 painted wooden sarcophagus 44 microscopic specks 44 saber tooth tigers 44 Edmontosaurus 44 Abisko 44 choanoflagellates 44 defective mitochondria 44 shaded craters 44 archaeologists unearthed 44 crinoid 44 Marmarth Research 44 mighty T. rex 44 greenhouse warming 44 Gigantoraptor 44 mosasaur 44 ammonite 44 IRC +# 44 water vapor condenses 44 Martian gullies 44 layered outcrops 44 trilobites 44 palaeontological 44 polar regions 44 toothed whale 44 CAIRO Archaeologists 44 Cape Adare 44 Pharaoh Tutankhamen 44 workmen huts 44 Neanderthal genes 44 extrasolar 44 cinder cones 44 hydrological cycle 44 WMAP satellite 44 Chasma Boreale 44 Hohle Fels 44 protein clumps 44 ichthyosaurs 44 Kay Bidle 44 Saqqaq 44 orbited Jupiter 44 photosynthesising 44 homo erectus 44 Fluctuating temperatures 44 preserved fossils 44 orbiting Kepler telescope 44 undiscovered particle 44 Hadrosaur 44 planet WASP #b 44 Mojoceratops 44 Ediacara 44 lightless depths 44 fine grained sediment 44 planet Gliese #c 44 Bramley Murton 44 anthropogenic carbon dioxide 44 Yellowstone Caldera 44 quartz grains 44 Super Kamiokande 44 Bredo Morstoel 44 Hamish Pritchard 44 refugium 44 Icadyptes 44 Beringia 44 annelid worms 44 Domoic acid neurotoxin 44 dinosaur mummies 44 Gliese #d 44 icy moon Enceladus 44 Fermi telescope 44 fossilisation 44 Higgs bosons 44 Himalayan river basins 44 zircon crystals 44 ocean sediment cores 44 Sea urchins 44 Homo heidelbergensis 44 micro meteorites 44 potent greenhouse gas 44 -# degrees Celsius [001] 44 mid latitudes 44 carbonaceous chondrite 44 duck billed hadrosaur 44 telogen phase 44 southerly latitudes 44 interstellar cloud 44 polar vortex 44 Von Frese