Related by context. Frequent words. (Click for all words.) 65 Antarctic ozone 53 Arctic permafrost 51 stratospheric ozone layer 51 hole 51 Lake Vostok 50 Earth ozone layer 50 ozone layer 49 Siberian permafrost 49 icecaps 49 holes 49 stratospheric ozone 49 magma chamber 48 galaxy formation 48 Mickelson bogeyed 48 Hawking radiation 48 Endurance Crater 48 icy crust 47 Ozone layer 47 Antarctic ice 46 red supergiant 46 mineralizing system 46 chalcopyrite mineralization 46 Martian rocks 46 protective ozone layer 46 meltwater 46 hydrothermal fluids 46 carbon dioxide concentrations 46 delineation drill 46 Melting glaciers 46 undersea plumes 45 wellbore 45 Drill hole MWNE 45 Greenland ice 45 sulfide minerals 45 Overnight temperatures 45 Greenland glaciers 45 atmospheric methane 45 icecap 45 previously undrilled 45 mineralized interval 45 deglaciation 44 sulfide mineralization 44 continental crust 44 solar nebula 44 glacial ice 44 Alpine glaciers 44 MK RC 44 Kasamene 44 moon Enceladus 44 equatorial Pacific Ocean 44 glacial till 44 martian atmosphere 44 Veta Madre 44 rover Spirit 44 methane hydrates 44 mineralized intercept 44 Haquira East 43 Higgs particle 43 oceanic crust 43 lateral extensions 43 ruptured wellhead 43 glacier 43 porphyry mineralization 43 thermocline 43 upper troposphere 43 poleward 43 Greenland Ice 43 polar ice 43 pyrite mineralization 43 magma 43 stope 43 Shaft Zone 43 intermediate casing 43 accretion disk 43 atmospheric CO 43 seafloor 43 thermosphere 43 reactor fuel rods 43 temperature gradient 43 hydrological cycle 43 atmospheric ozone 43 ocean ridges 43 vuggy silica 43 polar caps 43 glaciations 43 shallow depths 42 ultra violet radiation 42 sedimentary rock 42 skarn mineralization 42 retreating glaciers 42 lithosphere 42 Wilkins Ice Shelf 42 peridotite 42 scarps 42 methane hydrate 42 interglacial period 42 #/#-foot putt [002] 42 potash mineralization 42 erosional 42 hydrothermal breccia 42 Nighttime temperatures