Related by context. Frequent words. (Click for all words.) 33 Moab Utah 32 Sebastian Schnuelle 31 backcountry ski 31 Banff Alta 29 expedition 29 Revelstoke BC 29 summiting 29 melting glacier 29 Flagstaff Ariz. 28 forest ecologist 28 Ed Viesturs 28 Iditarod musher 27 Rocky Mountains 26 Steamboat Springs Colo. 26 glaciologist 26 National Geographic Adventure 25 marine ecologist 24 Kluane 24 Arctic explorer 24 geographer 23 Nome Alaska 23 Mount Katahdin 22 Mount Kilimanjaro 21 Hugh Neff 21 USGS scientist 21 glacier 20 Antarctica 20 Mt Kilimanjaro 20 Iditarods 20 expeditions 20 Sawtooth Mountains 19 conquered Everest 19 Arctic Circle 19 Seaside Ore. 19 Doug Mellgren 19 Lonnie 19 Weddell Sea 18 huckleberries 18 Bella Vista Ark. 18 Antarctic peninsula 17 USGS geophysicist 17 Cradle Mountain 17 Galapagos islands 16 glacial retreat 16 snowcapped peaks 16 Punta Arenas Chile 16 glacier melt 16 Yukon Territory 16 retreating glaciers 16 fabled Northwest Passage 16 Glaciers 15 Wrangell St 15 glaciers melting 14 subarctic 14 glaciers 14 Lorene 14 mountain ranges 14 glaciologists 13 NASA MODIS Image 13 icecaps 13 Burgess Shale 13 dinosaurs roamed 12 shrinking glaciers 12 sequoias 12 giant sequoias 11 aspen trees 11 polar ice 11 mountain glaciers 11 Antarctic 11 Arctic Ocean 11 dinosaur bones 11 Seward Peninsula 11 glacial ice 10 volcanically active 10 aspens 10 continental drift 10 journal Geology 10 glaciers melt 10 seamount 10 Ellesmere Island 9 Antarctic Peninsula 9 Pleistocene era 9 volcanoes 8 Ilulissat 8 melting ice 8 paleoclimate 8 caldera 8 sediment cores 7 lake sediments 7 Puncak Jaya 7 snowline 6 Antarctic Ice 6 lichen 5 icecap 5 permafrost 5 Antarctic ice 3 melting 3 polar regions 2 lichens 2 Quaternary 1 Precambrian