Related by context. Frequent words. (Click for all words.) 68 doomsday vault 63 Seed Vault 59 Svalbard Global 50 Svalbard 48 Arctic permafrost 43 Permafrost 43 temperate rainforest 43 Spitsbergen 42 Arctic Circle 41 Temperate 41 icebound 41 Noah Ark 40 Warmest 39 Lomonosov 39 Lake Vostok 39 Antarctic 39 permafrost 38 arctic tundra 38 primeval forest 38 Wadden Sea 38 Namib Desert 38 Arctic 38 North Pole 38 Norway 38 intrepid explorers 38 Arctic archipelago 38 Mars Lander 37 Melting glaciers 37 frozen wasteland 37 Kola Peninsula 37 tundra 36 arctic 36 dinosaur eggs 36 Abominable Snowman 36 Frozen 36 Snowball Earth 36 Antarctica 36 Sakhalin Island 36 Manmade 36 Qinghai Tibet Plateau 36 muskox 36 subarctic 36 Antartica 35 Secret 35 Orkneys 35 taiga 35 Something Fishy 35 Sahara Desert 35 megaliths 35 Carnivorous 35 Warming 35 Tortoises 35 methane hydrate 35 reindeer herders 35 Unearthed 35 Borneo 35 Brontosaurus 35 Artic 35 Brrrr 35 Frankenfish 35 Inuits 35 igloo 35 lava tubes 35 Forbidden Fruit 34 Cold Snap 34 Great Ape 34 boreal forests 34 Greenland 34 Glaciers 34 Thawing 34 Longyearbyen 34 Polar Bear 34 Snohvit 34 Fjords 34 Carbon Sequestration 34 Melting ice 34 Melting 33 Piglets 33 Younger Dryas 33 Weddell Sea 33 fiords 33 Cape Farewell 33 Worm 33 Repositories 33 Noah Ark. 33 Reindeer 33 Mythological 33 retreating glaciers 33 vaults 33 Himalayas 33 marmot 33 Scavenging 33 Treasure Trove 33 frozen tundra 33 Arctic seabed 33 undersea volcanoes 33 Nutria 33 pinecone 33 Prehistoric 33 Desertification 33 Global Warming