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(Click for frequent words.) 71 Earth ozone layer 68 ozone layer 67 stratospheric ozone 62 stratospheric ozone layer 60 Ozone layer 57 ozone layer shielding 56 Antarctic ozone 55 chlorofluorocarbons 54 Ozone Layer 53 ozone depleting gases 53 chlorofluorocarbons CFCs 52 harmful ultraviolet radiation 52 polar regions 52 damaging ultraviolet rays 51 Ozone depletion 51 damaging ultraviolet radiation 51 alpine glaciers 50 CFCs 50 ozone depletion 50 springtime ozone 50 deca BDEs 50 CFCs chlorofluorocarbons 49 exosphere 49 atmospheric ozone layer 49 Thawing permafrost 49 ozone depleting chemicals 49 ozone depleting substances 49 ultra violet radiation 49 sun ultraviolet radiation 49 ozone 49 Chlorofluorocarbons CFCs 48 sulphate aerosols 48 icecaps 48 atmospheric ozone 48 Warmer oceans 48 sulfate aerosols 48 Ocean acidification 48 gaseous pollutants 48 Carbon dioxide 48 Sulfur dioxide 48 blocks harmful ultraviolet 48 Eyjafjoell volcano 48 tooth enamel 48 midlatitudes 48 chlorine monoxide 48 ozone depleting chlorofluorocarbons 48 carbon dioxide 48 atmospheric methane 47 carbon dioxide concentrations 47 reactive nitrogen 47 greenhouse warming 47 ultraviolet UV rays 47 stratospheric ozone depletion 47 Ultraviolet radiation 47 ozone depleting chlorofluorocarbons CFCs 47 ocean ecosystems 47 hydrochlorofluorocarbons HCFCs 47 vulnerable thermal shielding 47 acid rain 47 ultraviolet UV radiation 47 Greenland icesheet 47 Arctic permafrost 47 terrestrial ecosystems 47 amphibian populations 47 Arctic icecap 47 Nitrogen oxides 47 Greenhouse gases 47 volcanic plume 46 sulphate particles 46 oxide hydrofluorocarbons perfluorocarbons 46 aerosol particles 46 sun ultraviolet rays 46 mesosphere 46 calcium carbonate shells 46 Boreal forests 46 halons 46 carbon monoxide nitrogen dioxide 46 subsurface ocean 46 polar caps 46 thinning ozone layer 46 Chlorofluorocarbons 46 atmospheric CO2 levels 46 Ayles Ice Shelf 46 Antarctic ozone layer 46 ocean acidity 46 Upsilon Andromedae b 46 fluorocarbons 46 deforestation overfishing 46 harmful ultraviolet rays 46 moon permanently shadowed 46 longwave radiation 46 polar vortex 46 invisible odorless tasteless 46 ultra violet rays 46 Himalayan Glaciers 46 produced Friedlingstein 45 Stratospheric ozone 45 Greenhouse gasses 45 northern arctic plains 45 orbiting telescope 45 chloroflourocarbons 45 Warmer drier weather 45 mountain glaciers 45 hydrological cycle 45 Antarctic glaciers 45 Acidification 45 ozone depleting compounds 45 Greenland Glaciers 45 GJ#b 45 comet nucleus 45 Fashion Movie Reviews 45 Ultraviolet rays 45 melt glaciers 45 greenhouse gases GHGs 45 icesheets 45 deplete ozone 45 water vapor 45 peat soils 45 sulfur dioxide SO2 45 Alpine glaciers 45 Warmer seas 45 icesheet 45 thermosphere 45 Mount Kilimanjaro glaciers 45 Martian dust 45 permafrost thaws 45 Carbon dioxide CO2 45 Antarctic glacier 45 axial tilt 45 potent greenhouse gas 45 ultraviolet sunlight 45 coccolithophores 45 permafrost 45 wispy cirrus clouds 45 icy moon Enceladus 45 outermost layers 45 COROT 7b 45 oceans 45 Antarctic ice 44 carbon dioxide CO2 44 meteorite impacts 44 aerosol propellants 44 boreal forest 44 Service WGMS 44 reef habitats 44 Ian McShane Pillars 44 martian atmosphere 44 hydrofluorocarbons HFCs 44 seafloor sediments 44 galactic cosmic rays 44 greenhouse gas concentrations 44 Methyl mercury 44 absorbs carbon dioxide 44 CO2 concentrations 44 asteroid collisions 44 tailpipe gases 44 tropical forests 44 dermal layers 44 Carbon dioxide emissions 44 polar icecap 44 Ozone Hole 44 Montreal Protocol 44 glacier melts 44 micro meteorites 44 sulphates 44 Methylmercury 44 atmospheric carbon dioxide 44 burning fossil fuels 44 shadowed craters 44 shrinking glaciers 44 Martian atmosphere 44 Ozone Depletion 44 greenhouse gases 44 dustier stormier atmosphere 44 depleting ozone layer 44 comets asteroids 44 abrasive volcanic ash 44 harmful ultraviolet UV radiation 44 anthropogenic CO2 emissions 44 sulfate aerosol 44 Eyjafjallajokull Volcano 44 Stomach banding causes 43 walrus polar bears 43 atmospheric aerosols 43 glaciers 43 mid latitudes 43 radioactive decay 43 runaway greenhouse 43 dwelling organisms 43 sulfur aerosols 43 Venusian atmosphere 43 Volatile organic compounds 43 permafrost melts 43 ppmv 43 icecap 43 Ultrafine particles 43 cometary impacts 43 reef organisms 43 GJ #b [001] 43 ultraviolet radiation 43 methyl chloroform 43 planet magnetosphere 43 scarps indicating 43 aerosols 43 Ultraviolet light 43 Fomalhaut b 43 volcanic plumes 43 Ulysses spacecraft 43 Laurentide ice sheet 43 Gigatonnes 43 Sulfur dioxide emissions 43 Permian Triassic extinction 43 Himalayan river basins 43 chlorofluorocarbons CFC 43 anthropogenic emissions 43 anthropogenic greenhouse gases 43 warming gases 43 glacial meltwater 43 Saturn moon Mimas 43 hydrofluorocarbon 43 chlorofluorocarbon 43 sequesters carbon 43 biosphere 43 Jupiter moon Io 43 P/# A2 43 tropospheric ozone 43 carbon dioxide CO ² 43 polar bear populations 43 Jellyfish swarm northward 43 absorbs CO2 43 CFC propellants 43 PFCAs 43 ionized particles 43 Greenland ice 43 heat trapping carbon dioxide 43 GHG concentrations 43 ecosystems 43 stratospheric clouds 43 upper troposphere 43 Carl Gustaf Lundin 43 hoofed critters 43 hydroxyl molecules 43 marine ecosystems 43 potent neurotoxin 43 teragrams 43 Tropical rainforests 43 ultraviolet UV light 43 Envisat satellite 43 poisonous gasses 43 thirstiest consumer 43 ozone layer depletion 42 planets circling stars 42 lunar crust 42 pesticide methyl bromide 42 meteoritic material 42 Martian rocks 42 pteropods 42 Greenland glaciers 42 delicate ecosystems 42 Ketones 42 polar icecaps 42 hydrosphere 42 meteorite bombardment 42 gravitational tugs 42 greenhouse gases GHG 42 hydrofluorocarbons 42 Shiveluch 42 ozone O3 42 sub glacial lakes 42 oVOCs 42 smallest exoplanet 42 tropical savanna 42 fluorinated gases 42 fragile marine ecosystems 42 synthetic nitrogen fertilizer 42 enormous sperm whales 42 sun harmful ultraviolet 42 Orbiting Carbon Observatory OCO 42 planet HD #b 42 ozone particulates 42 lithosphere 42 VY Canis Majoris 42 nitrous oxide N2O 42 boreal regions 42 magnetic substorms 42 Titan smoggy 42 seagrass meadows 42 Cosmic rays 42 Tunguska meteorite 42 cometary debris 42 hydrologic cycle 42 Siple Dome 42 thermohaline circulation 42 AB Aurigae 42 depleting substances 42 absorb carbon dioxide 42 Eyjafjoell eruption 42 harmful byproducts 42 melting permafrost 42 ocean basins 42 sulfur dioxide pollution 42 carbonate minerals 42 galactic disk 42 Hesperian Epoch 42 reef ecosystems 42 Cigarette smoke 42 troposphere 42 chlorine peroxide 42 dental enamel 42 Mercury flyby 42 specular reflection 42 Polluted runoff 42 atmospheric circulations 42 ingested inhaled 42 greatest insect emergences 42 Methyl bromide 42 nitrogen trifluoride 42 outer crust 42 smoggy atmosphere 42 earths 42 heat trapping greenhouse gases 42 fissure eruption 42 Hesperian epoch 42 Amazon rainforest 42 ozone depleting substance 42 CryoSat satellite 42 Radioactive substances 42 UVA radiation 42 oxidized cholesterol 42 silicate rocks 42 Canada Boreal Forest 42 permafrost melting 42 active volcanism 42 Polycyclic aromatic hydrocarbons 42 HIP #b 42 albedo reflectivity 42 tiny airborne particles 42 juglone 42 planet 42 methane CH4 42 HD#b 42 Antarctic icesheet 41 clog waterways 41 Petermann Glacier 41 lung irritant 41 hydroxyl radicals 41 atmospheric CO 41 preindustrial times 41 respiratory irritant 41 Melting glaciers 41 Waleed Abdalati director 41 cosmic rays 41 deepwater corals 41 Saturn moon Enceladus 41 planetwide 41 anthropogenic carbon dioxide 41 gaseous planet 41 gaseous methane 41 volcanically active 41 alter nutrient absorption 41 aerosol concentrations 41 oceanic circulation 41 heat trapping gases 41 rare wekiu bug 41 micrometeoroids 41 Pine beetles 41 clathrates 41 orbiting observatories 41 moon gravitational pull 41 orbited Jupiter 41 Atmospheric CO2 41 ozone pollutant 41 Palaeocene Eocene Thermal Maximum 41 subglacial lakes 41 Corot 7b 41 magnetosphere 41 Particulates 41 albedo feedback 41 polyaromatic hydrocarbons 41 cometary dust 41 OGLE TR #b 41 Persistent Organic Pollutants 41 albedo 41 primitive meteorites 41 hydrazine tank 41 Antarctic stratosphere 41 acidic oceans 41 biodiverse ecosystems 41 interstellar dust samples 41 NASA QuikScat satellite 41 radial velocity method 41 combustion gases 41 whitebark pines 41 suspected carcinogen 41 Carbon monoxide CO 41 gasses 41 Milankovitch cycles 41 Particulate pollution 41 oxidized mercury 41 peat lands 41 gases 41 microscopic creatures 41 planet WASP #b 41 Gangotri glacier 41 solar nebula 41 Qinghai Tibet plateau 41 Bottom trawling 41 heat trapping gasses 41 Solar flares 41 Inorganic arsenic 41 harmful ultraviolet 41 ultra violet UV rays 41 atmospheric pollutants 41 seagrasses 41 cryosphere 41 sulfur hexafluoride 41 cyclonic storms 41 periodic dimming 41 lodgepole pine forests 41 Kilimanjaro glaciers 41 magnetic dynamo 41 Gondwana supercontinent 41 Antarctica 41 floods droughts heatwaves 41 Asbestos fibers 41 carbon sinks 41 PCBs dioxins 41 DDT pesticide 41 windblown sand 41 silicate dust 41 Sulphur dioxide 41 inorganic mercury 41 Amazon rainforests 41 Saturn rings 41 sun UV rays 41 icy crust 41 subatomic theory 41 perfluorinated chemicals PFCs 41 carbonic acid 41 gravitational tides 41 Carbon dioxide CO2 emissions 41 Samuel Oschin Telescope 41 emits greenhouse gases 41 atmospheric circulation 41 GISS analysis 41 anthropogenic aerosols 41 comet 41 aquatic biota 41 Hotter drier 41 visible wavelengths 41 sticky honeydew 41 harmful toxins 41 fertile topsoil 40 boreal ecosystems 40 tropical rainforests 40 comets orbiting 40 underground geologic formations 40 streambanks 40 Phytoplankton 40 Tropical deforestation 40 retreating glaciers 40 atmospheric CO2 40 atrazine herbicide 40 Ozone disinfection produces 40 sulfur dioxide 40 brightest supernova 40 sea turtle populations 40 silicon monoxide 40 World Meteorological Organisation 40 outer layers 40 Keck Interferometer 40 orangutan populations 40 equatorial Pacific Ocean 40 reproduce prolifically 40 respirable particles 40 Elemental mercury 40 biologically diverse ecosystems 40 asteroid Ceres 40 carbon monoxide particulate matter 40 gases emitted 40 marine ecosystem 40 Natalia Shakhova 40 greenhouse gasses 40 carbon monoxide nitrogen oxides 40 soot particles 40 single celled microorganisms 40 bee populations 40 particulate matter nitrogen oxides 40 EPA Greenhouse gases 40 stockpiled cluster munitions 40 galaxy supermassive black 40 equatorial regions 40 emits X rays 40 planetary warming 40 Mount Bosavi 40 jovian 40 clogs airways 40 acidifying 40 radioactive particles 40 alpha particles 40 Cryogenian 40 greenhouse gases emitted 40 PM#.# particles 40 warmings 40 atmospheric turbulence 40 tiny single celled 40 ozone depleting CFCs 40 Cancri e 40 Harmful algal blooms 40 -# degrees Fahrenheit [002] 40 Amazonian forests 40 fainter objects 40 peat bogs 40 brutal tyrannies 40 asteroid impacts 40 harmful ultra violet 40 Siberian permafrost 40 mammal extinctions 40 Noachian era 40 WASP #b 40 Fermi telescope 40 Martian moons Phobos 40 sulfuryl fluoride 40 hydroxyl radical 40 endocrine disrupting chemicals EDCs 40 thirdhand smoke 40 N2O hydrofluorocarbons HFCs perfluorocarbons 40 Asteroid Apophis 40 Goldilocks planet 40 Gamma rays 40 Polar Regions 40 golden toad 40 coral reef ecosystems 40 basaltic rocks 40 heat trapping greenhouse 40 amplification Zwally 40 sulfuric acid mist 40 carcinogenic compounds 40 carbon tetrachloride 40 Earthlike 40 greenhouse gas nitrous oxide 40 ecological overshoot 40 aquatic ecosystems 40 mercury potent neurotoxin 40 brightest meteors 40 coral reefs 40 gravity warps 40 Particulate emissions 40 global warming gasses 40 Cumbre Vieja 40 journal Meteoritics 40 forest understory 40 pesticides herbicides fungicides 40 heliosphere 40 insecticide DDT 40 airglow 40 cosmic radiation 40 fearsome Tyrannosaurus rex 40 ice melts 40 harmful radiations 40 Woolly mammoths 40 soot smog 40 El Nino periodic 40 coastal mangrove forests 40 meteoroids 40 R #a refrigerant 40 WMO 40 chlorofluorocarbon gases 40 anthropogenically 40 NASA Cassini spacecraft 40 predatory fishes 40 toxaphene 40 Manned missions 40 Govindasamy Bala 40 Einstein relativity theory 40 alpha particle 40 nitrogen oxides emitted 40 myelin sheaths 40 permanently shadowed craters 40 laser irradiation 40 neighboring Andromeda galaxy 40 kept mountainous snowbanks 40 Martian meteorites 40 Himalaya glaciers 40 interstellar dust grains 40 Galapagos volcano erupts 40 forest ecosystems 40 Rossby waves 40 carbonate globules 40 degrees Centigrade #.#F 40 sheet Summerhayes 40 heat trapping emissions 40 Wilkins Ice Shelf 40 carbon emitted 40 cosmic ray flux 40 icy comets 40 atmospheric CO2 concentrations 40 Corot 9b 39 glaciers retreating 39 melting icebergs 39 limbo Len Gengel 39 Nitrogen dioxide 39 Hawking Radiation 39 methyl chloride 39 banned pesticide DDT 39 cosmic cannibal 39 ionosphere 39 molten magma 39 excrete methane 39 Andean glaciers 39 Permian extinction 39 Galileo spacecraft 39 meteoroid impacts 39 planet HD#b 39 polar ice 39 HABs 39 chemical malachite green 39 Cosmic Microwave Background CMB 39 Permafrost 39 HCFCs 39 acidifying oceans 39 Neutron stars 39 planets orbiting sun 39 SN #gy 39 telescopic observations 39 honeybee population 39 Aletsch 39 mineral olivine 39 polar stratospheric 39 thawing permafrost 39 receding glaciers 39 tidal bulge 39 Saharan dust 39 tholins 39 halocarbons 39 sized planets orbiting 39 cosmic collisions 39 planetary Transits 39 methane 39 gigatonne 39 galaxy M# [001] 39 spinning neutron 39 ultraviolet rays 39 Carbon dioxide concentrations 39 NASA satellites orbiting 39 Contrails 39 atmospheric concentrations 39 gaseous envelope 39 Noctilucent clouds 39 orang utan habitat 39 Diporeia 39 Breathing ozone 39 floods heatwaves droughts 39 degraded ecosystems 39 Earth magnetosphere 39 solar corona 39 meteoroid 39 halogenated hydrocarbons 39 Aerosols 39 interstellar particles 39 mercury emitted 39 odorless colorless gas 39 Korty reiterated 39 pliosaur ferocious predator 39 spruce fir forest 39 inversion layer 39 acidification 39 temperate forests 39 Siberian Traps 39 diporeia 39 volcanic eruptions 39 chlorofluorocarbon CFC 39 Persistent Organic Pollutants POPs 39 supernova explosion 39 merchant Mamoru Saito 39 Cow burps 39 NASA Aqua 39 cambium layer 39 Starz Pillars 39 radiative forcing 39 Hawking radiation 39 Ozone Depleting Substances ODS 39 anthropogenic warming 39 Avobenzone 39 heat trapping pollutants 39 constellation Vulpecula 39 deca BDE 39 Coral reefs 39 studio Disneynature label 39 Earthlike planet 39 Orbiting Carbon Observatory 39 prairie chub 39 Microscopic particles 39 Gravitational waves 39 permanently shadowed 39 boreal forests 39 Supermassive black 39 vertebrate animals 39 thawing tundra 39 moonlet 39 manmade CO2 emissions 39 heat trapping greenhouse gas 39 PFOS 39 Mercury exosphere 39 Saturn Enceladus 39 geological timescales 39 heatwaves floods 39 methane burps 39 Domoic acid neurotoxin 39 Laurentide Ice Sheet 39 Korty stressed 39 Earth biosphere 39 Tropical Rainfall Measuring 39 moonlets 39 sulfur gases 39 sulfuric gases 39 Follett Pillars 39 thermonuclear reactions 39 emitting radiation 39 irritate lungs 39 Coral reef 39 Chronic inflammation 39 phytoplankton 39 thaw cycles 39 Warming temperatures 39 When plutonium decays 39 Jakobshavn 39 infra red radiation 39 UV radiation 39 arctic plains 39 radiational 39 UV rays 39 Maunder minimum 39 gigatonnes 39 Earth 39 chemical ammonium perfluorooctanoate 39 perfluorinated compounds PFCs 39 photochemical reactions 39 nitrogen oxides carbon monoxide 39 tropical coral reefs 39 Grímsvötn volcano 39 Lunny oyster farm 39 candida overgrowth 39 Gusev crater 39 Brigham Grette 39 peatlands 39 methyl cyanide 39 2C #.#F 39 peat swamp forests 39 pristine Drakes Estero 39 Lake Untersee 39 NuSTAR 39 bioaccumulative 39 honey bee populations 39 perfluorocarbons PFCs 39 Ilulissat glacier 39 spacecraft flyby 39 warship Vasa 39 Sulfuryl fluoride 39 single celled algae 39 biodiverse regions 39 Omar Baddour 39 Hellas Basin 39 Keeling Curve 39 constellation Carina 39 tropopause 39 greenhouses gases 39 Great Aletsch Glacier 39 chloride concentrations 39 depletes oxygen 39 Brenda Ekwurzel climate 39 seabed sediments 39 assumed planets circling 39 Nasdaq SPWRA SPWRB designs 39 carbon dioxide methane nitrous 39 Greenland Antarctica 39 aquatic ecosystem 39 Gliese #G 39 icy moons 39 KT extinction 39 Flame retardants 39 X ray pulses 39 nightglow 39 pollutants 38 nasal cilia 38 shadowy craters 38 terrestrial biosphere 38 harmful vapors 38 sentient inhabitants 38 Foam insulation 38 coastal marshland 38 Amundsen Sea 38 Nuclear fission 38 Storing carbon dioxide 38 hydrological cycles 38 Schladow 38 energetic electrons 38 naturally occurring mineral 38 potent carcinogen 38 polar mesospheric clouds 38 sunlike stars 38 CO2 Negated As 38 magnetic fields 38 RS Ophiuchi 38 CO2 38 GJ #b [002] 38 Moapa dace 38 species extinctions 38 CO -2 38 neurotoxin 38 heatwaves droughts 38 infrared photons 38 CFCs HCFCs 38 anthropogenic greenhouse gas 38 Himalayan glaciers 38 Plate tectonics 38 wolverine habitat 38 radioactive nuclides 38 microwave radiation 38 Greenland glacier 38 Tom Nalepa 38 polar bear habitat 38 marine phytoplankton 38 GZK cutoff 38 lava flowed 38 chemical composition 38 naturally occurring substance 38 geomagnetic substorms 38 biogeochemical cycles 38 ultraviolet radiation emitted 38 Kangerdlugssuaq 38 landmasses 38 Boreal Forest 38 flood basalts 38 MANILA Philippines Poorer 38 sedimentary layers 38 ionized molecules 38 freshwater ecosystems 38 supervolcanoes 38 Glaciers 38 particulate matter PM#.# 38 super perigee moon 38 organic pollutants POPs 38 Glacial melt 38 moon Io 38 meteor impacts 38 magma ocean 38 Grímsvötn 38 zinc oxide nanoparticles 38 ultraviolet wavelengths 38 warm interglacial 38 Pachauri IPCC 38 hormone disruptors 38 eroding shorelines 38 meridional overturning circulation 38 flame retardant chemicals 38 superoxides 38 Saturn auroras 38 cosmic ray intensity 38 particles emitted 38 diacetyl vapors 38 Recriminations erupt 38 Ultraviolet UV radiation 38 warmer wetter 38 Kepler 9c 38 La Nina cooling 38 upland forests 38 persistent bio accumulative 38 orbiting observatory 38 Greenland icecap 38 hydrocarbons HC 38 SPICAM 38 Ontario Lacus 38 cow burps 38 chlorine byproducts 38 glacial interglacial 38 microbial biofilms 38 Hot Jupiters 38 ocean acidification 38 radioactive nuclei 38 Hunt Ice Shelf 38 irregular pigmentation 38 smog forming nitrogen oxide 38 MG J# +# 38 smallpox viruses 38 degrees above preindustrial 38 iodine uptake 38 coral reef biodiversity 38 lichens 38 mercury pollution 38 Toba eruption 38 thermal inertia 38 linalool 38 Anthony Barnosky 38 amphipods 38 Arctic ice floes 38 Saturn magnetosphere 38 Cretaceous Tertiary KT 38 organic compounds 38 lunar meteorites 38 UV irradiation 38 Kuiper belt object 38 infrared radiation 38 subtropical regions 38 Mandushev 38 Geophysicist Steinunn Jakobsdottir 38 glacial interglacial cycles 38 combustion byproducts 38 gravitational interaction 38 strangelet 38 gravitational keyhole 38 X ray emission 38 ionised 38 sulfurous gases 38 Pluto dwarf 38 deep convective clouds 38 Mata Atlantica 38 polar explorer Ernest Shackleton 38 endangered rainforests 38 biodegraded 38 dwarf galaxy 38 nitrous oxide emissions 38 polar oceans 38 Martian rovers 38 planets orbiting stars 38 interstellar clouds 38 phytoplankton blooms 38 glaciers receded 38 emitting greenhouse gases 38 NASA Wilkinson Microwave 38 Svedhem 38 endocrine disrupter 38 strangelets 38 airborne pollutant 38 Study Tanning beds 38 Arctic oscillation 38 methane concentrations 38 HD #b [001] 38 Earth albedo 38 mountain snowpacks 38 intrinsic brightness 38 bleached coral 38 Yangtze finless porpoise 38 geoneutrinos 38 particulate soot 38 driest inhabited continent 38 mountain lava dome 38 HFCs perfluorocarbons PFCs 38 World Meteorological Organization 38 Holocene epoch 38 Glaciers melting 38 SIOUX CENTER Iowa KTIV 38 Diesel exhaust 38 biomagnification 38 planet orbits 38 SO2 sulfur dioxide 38 infalling gas 38 hypoxic zone 38 Extrasolar planets 38 Anthropogenic 38 NASA twin rovers 38 interglacial periods 38 dimethyl sulphide 38 volcano lava dome 38 lava fountains 38 discover Fomalhaut 38 vegetation 38 gamma rays emitted 38 UVC rays 38 protoplanets 38 Hongbin Qu chief 38 RovA 38 moons orbiting 38 plankton 38 Walt Meier 38 silicate mantle 38 Eyjafjallajökull eruption 38 hydrofluorocarbon HFC 38 Eyjafjallajokul erupted 38 Jupiter moons Europa 38 floods droughts heat 38 gravitational lens 38 decaying vegetation 38 Earth axial tilt 38 anthropogenic CO2 38 dust particles 38 Gliese #e 38 microbial organisms 38 Mold spores 38 peat swamps 38 particulates sulfur dioxide 38 Jay Famiglietti 38 towering icebergs 38 Paleocene Eocene Thermal Maximum 38 Greenhouse gases trap 38 Saturn outermost 38 poleward 38 deplete oxygen 38 Lava flows