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(Click for frequent words.) 72 ozone layer 71 protective ozone layer 70 stratospheric ozone layer 69 stratospheric ozone 66 Ozone layer 63 ozone depleting gases 62 Ozone depletion 61 Antarctic ozone 60 ozone layer shielding 58 sulphate aerosols 58 chlorofluorocarbons CFCs 58 CFCs chlorofluorocarbons 57 atmospheric ozone layer 57 atmospheric ozone 56 chlorofluorocarbons 56 CFCs 56 sulfate aerosols 55 Ozone Layer 55 ozone depleting compounds 55 ozone depleting substance 55 chlorofluorocarbons CFC 54 ultraviolet sunlight 54 ozone depletion 54 ozone depleting chemicals 54 Thawing permafrost 54 hydrochlorofluorocarbons HCFCs 54 damaging ultraviolet rays 54 ozone 53 halons 53 ozone depleting chlorofluorocarbons 53 ozone layer depletion 53 ultra violet radiation 53 Ultraviolet rays 53 springtime ozone 53 ozone depleting substances 53 sulfuryl fluoride 53 Chlorofluorocarbons CFCs 53 atmospheric CO2 levels 52 microbial biofilms 52 fluorinated gases 52 methyl chloroform 52 carbon dioxide concentrations 52 Orbiting Carbon Observatory OCO 52 asteroid collisions 52 sun ultraviolet radiation 52 stratospheric ozone depletion 51 Upsilon Andromedae b 51 harmful ultraviolet radiation 51 atrazine herbicide 51 hydrofluorocarbon 51 Ocean acidification 51 degraded ecosystems 51 Einstein relativity theory 51 deca BDEs 51 chloroflourocarbons 51 chlorofluorocarbon 51 iodine uptake 51 anthropogenic emissions 51 chlorine peroxide 51 EPA Greenhouse gases 51 greenhouse gases endangers 51 chemical ammonium perfluorooctanoate 51 chlorofluorocarbon gases 50 Ultraviolet radiation 50 ultraviolet UV rays 50 invisible odorless tasteless 50 GHG concentrations 50 anthropogenic warming 50 Keck Interferometer 50 damaging ultraviolet radiation 50 mercury potent neurotoxin 50 fluorocarbons 50 anthropogenic greenhouse gases 50 icesheets 50 Greenhouse gasses 50 scavenger cells 50 Ultrafine particles 50 Antarctic ozone layer 50 subsurface ocean 50 Carbon dioxide CO2 50 exosphere 50 planetary Transits 50 Earth biosphere 50 chlorofluorocarbon CFC 50 endocrine disrupting chemicals EDCs 50 CFC propellants 49 gaseous pollutants 49 planetwide 49 rare wekiu bug 49 micrometeoroids 49 tropospheric ozone 49 nitrous oxide N2O 49 Ozone Depleting Substances ODS 49 deplete ozone 49 sulphate particles 49 Scorpion venom 49 ultraviolet UV light 49 ozone O3 49 Chlorofluorocarbons 49 comets asteroids 49 reactive nitrogen 49 thirdhand smoke 49 planet habitability 49 meteoritic material 49 radioactive nuclides 49 Bottom trawling 49 blocks harmful ultraviolet 49 ozone depleting chlorofluorocarbons CFCs 49 Methyl mercury 49 Methylmercury 49 radioactive nuclei 49 Methyl bromide 49 ocean ecosystems 49 smallest exoplanet 49 Acidification 49 Ozone Hole 49 Ulysses spacecraft 49 Polycyclic aromatic hydrocarbons 49 ozone depleting CFCs 48 asteroid impacts 48 subglacial lakes 48 soot emitted 48 Comet 9P/Tempel 1 48 sulfur aerosols 48 atmospheric methane 48 aerosol particles 48 nitrogen trifluoride 48 Montreal Protocol 48 cometary dust 48 greenhouse gases GHG 48 hydroxyl radical 48 harmful gasses 48 Nanobacteria 48 halogenated hydrocarbons 48 toxaphene 48 hydrological cycle 48 Fomalhaut b 48 neuro toxin 48 hydrazine tank 48 microbiological contamination 48 Asteroid Apophis 48 galactic cosmic rays 48 martian atmosphere 48 Svedhem 48 micro meteorites 48 airborne pollutant 48 chlorine monoxide 48 magnetic substorms 48 carbon dioxide CO2 48 sulphates 48 sun ultraviolet rays 48 harmful ultraviolet 48 atmospheric aerosols 48 marine ecosystems 48 Orbiting Carbon Observatory 48 methane burps 48 microscopic bubbles 48 produced Friedlingstein 47 Envisat satellite 47 Warmer oceans 47 tiny airborne particles 47 anthropogenic CO2 emissions 47 KT extinction 47 greenhouse gases GHGs 47 Gamma ray burst 47 Hotter drier 47 depleting ozone layer 47 tailpipe gases 47 Tunguska meteorite 47 meteorite impacts 47 PFCAs 47 CryoSat satellite 47 Martian dust 47 microbial organisms 47 Earthly contamination 47 Mars Spirit rover 47 potent greenhouse gas 47 endocrine disrupting compounds 47 vulnerable thermal shielding 47 geoengineering schemes 47 Stratospheric ozone 47 sulfate particles 47 smallpox viruses 47 strangelets 47 osmotic stress 47 DDT pesticide 47 sulfur dioxide SO2 47 Mercury magnetosphere 47 sulfate aerosol 47 invasive quagga mussel 47 carbon dioxide 47 planet magnetosphere 47 deforestation overfishing 47 potent neurotoxin 47 sulfur gases 47 Carbon monoxide CO 47 delicate ecosystems 47 hydrofluorocarbons HFCs 47 periodic dimming 47 Martian rocks 47 DDT PCBs 47 Hesperian Epoch 47 geoneutrinos 47 Nitrogen oxides 47 oxidative stresses 47 Atmospheric CO2 47 COROT 7b 47 aboard ESA Envisat 47 olivine mineral 47 laser irradiation 47 fragile marine ecosystems 47 orbiting observatories 47 carbondioxide 47 acid rain 47 Breathing ozone 47 Fermi telescope 47 megafauna extinction 47 refrigerant leaks 47 reactive oxygen molecules 47 Ozone Depletion 47 runaway greenhouse 47 Earthlike planet 47 Mercury flyby 47 diseased marrow 47 dermal layers 47 greenhouse gas concentrations 47 ultra violet rays 46 depleting substances 46 Ozone disinfection produces 46 Persistent Organic Pollutants POPs 46 DDT pesticide banned 46 ESA XMM Newton 46 zinc oxide nanoparticles 46 CFCs HCFCs 46 endocrine disrupter 46 cosmic collisions 46 ocean fertilization 46 harmful ultraviolet UV radiation 46 Halons 46 CO ₂ 46 GJ #b [001] 46 radial velocity method 46 nanobacteria 46 aerosols 46 anthropogenic interference 46 Hawking Radiation 46 infalling gas 46 drywall emits 46 walrus polar bears 46 glacial interglacial cycles 46 coastal mangrove forests 46 Fine particulates 46 Reactive oxygen species 46 Type Ia supernovas 46 atmospheric nitrogen 46 spectral measurements 46 methyl chloride 46 stockpiled cluster munitions 46 acidic oceans 46 photochemical reactions 46 harmful ultraviolet rays 46 peat soils 46 coccolithophores 46 orbiting telescope 46 Planetary Fourier Spectrometer PFS 46 pesticide methyl bromide 46 QQ# 46 geomagnetic substorms 46 polar regions 46 cometary impacts 46 carbonate minerals 46 Big Bang Machine 46 planetary warming 46 melting permafrost 46 GOSAT 46 Warmer seas 46 matrix interferences 46 Antarctic stratosphere 46 Martian rovers 46 Lunny oyster farm 46 reef habitats 46 azinphos methyl 46 Inorganic arsenic 46 Persistent Organic Pollutants 46 ecological overshoot 46 longwave radiation 46 reef ecosystems 46 dustier stormier atmosphere 46 Kharecha 46 biogeochemical cycling 46 heptachlor 46 sulfur isotope 46 thinning ozone layer 46 Spaceguard Survey 46 tiny single celled 46 clogging waterways 46 icesheet 46 esophageal lining 46 Anthropogenic 46 planets orbiting distant 46 insecticide DDT 46 Plate tectonics 46 ozone munching 46 Hawking radiation 46 nightglow 46 hypoxic zone 46 cow farts 46 Amazonian forests 46 polar vortex 46 clathrates 46 candida overgrowth 46 orbiting Hubble Space Telescope 46 photosynthetic apparatus 45 reef organisms 45 #BP# 45 Jellyfish swarm northward 45 superoxides 45 Greenland icesheet 45 sub glacial lakes 45 terrestrial ecosystems 45 GJ#b 45 Hubble Space Telescope HST 45 exo planet 45 isotope fractionation 45 cosmic cannibal 45 aerosol propellants 45 anthropogenic carbon dioxide 45 toxic gasses 45 Cryosat 45 Sulphur dioxide 45 Deepwater Horizon gusher 45 Saturn outermost 45 axial tilt 45 Environmental Programme UNEP 45 asbestos fireproofing 45 diacetyl vapors 45 Elemental mercury 45 atmospheric carbon dioxide 45 orbiting observatory 45 hydrogen sulphide H2S 45 Endocrine disruptors 45 seafloors 45 asteroid 45 particulate pollutants 45 meteoroid 45 strangelet 45 meteoroid impacts 45 Ozone depleting substances 45 pollutant particles 45 hydrologic cycle 45 mesosphere 45 ethylmercury 45 halogenated gases 45 perfluorocarbons PFCs 45 NASA LCROSS 45 hydroxyl radicals 45 greenhouse gases 45 journal Meteoritics 45 electromagnetic fields EMFs 45 microcystins 45 Supermassive black 45 poisonous gasses 45 beneath Merapi lava 45 HumiFilters 45 greenhouse gas nitrous oxide 45 perfluorinated chemicals PFCs 45 asteroid Apophis 45 soot particulates 45 Foam insulation 45 oxidative DNA 45 nitrogen leaching 45 manmade greenhouse gas 45 herbicide Spike #DF 45 bioaccumulative 45 halocarbons 45 harmful byproducts 45 silicate rocks 45 volcanic plumes 45 NASA Far Ultraviolet 45 Arctic icecap 45 nutrient depletion 45 Saharan dust 45 toxic hydrogen sulfide 45 shadowed craters 45 spacecraft thrusters 45 hydrofluorocarbons 45 Jupiter icy moons 45 pesticides herbicides fungicides 45 dental enamel 45 CoRoT satellite 45 neonicotinoid pesticides 45 polluted groundwater 45 peat lands 45 nuclides 45 smog forming nitrogen oxide 45 biosphere 45 hydrofluorocarbon HFC 45 atmospheric CO 45 oceans 45 shipworm 45 carbon monoxide nitrogen dioxide 45 ultraviolet UV radiation 45 Carl Gustaf Lundin 45 HCFC #b 45 aquatic biota 45 phosphine gas 45 rubidium vapor 45 cosmic phenomena 45 Tunguska explosion 45 greenhouse warming 45 Shallower quakes tend 45 groundwater contaminant 45 ice nucleation 45 APXS 45 Higgs boson particle 44 bone demineralization 44 biomagnification 44 seafloor sediments 44 R #a refrigerant 44 Acrylamide 44 iron sulfate 44 acrolein 44 Palaeocene Eocene Thermal Maximum 44 Saturn moon Mimas 44 Arctic permafrost 44 gravitational tides 44 synthetic nitrogen fertilizer 44 cone snail venom 44 boreal ecosystems 44 Le Quéré 44 phagocytes inhibiting NADPH oxidase 44 gravitational tugs 44 calcium carbonate shells 44 Harmful algal blooms 44 Antarctic glaciers 44 mimics estrogen 44 sooty particles 44 photochemically 44 asteroids comets 44 Mandushev 44 marine ecosystem 44 Alpha Particle 44 exoplanets orbiting 44 Tagish Lake meteorite 44 Antarctic glacier 44 type Ia supernova 44 AB Aurigae 44 meteorite bombardment 44 carbonic acid 44 Mojzsis 44 anthropogenic greenhouse gas 44 Cosmic Microwave Background CMB 44 Martian microbes 44 halon 44 NuSTAR 44 ozone particulates 44 planet 44 methane 44 peroxynitrite 44 atmospheric pollutants 44 global warming gasses 44 specular reflection 44 osteoporosis brittle bones 44 Overfishing pollution 44 atmospheric CO2 44 Volatile organic compounds 44 impactors 44 Greenhouse gases 44 airborne pollutants 44 ozone particulate matter 44 polyaromatic hydrocarbons 44 deep convective clouds 44 ionized particles 44 aerosol spray cans 44 cow flatulence 44 ultraviolet radiation emitted 44 Ross Salawitch 44 cow burps 44 NASA THEMIS 44 Radioactive substances 44 phenanthrene 44 glacier melts 44 bacteria Bacillus anthracis 44 SIM PlanetQuest 44 dangerous anthropogenic interference 44 Selenium supplements 44 heatwaves droughts 44 jovian 44 dinosaur extinction 44 bacteria Streptococcus pneumoniae 44 microlensing 44 mutagens 44 Streptococcus pneumoniae S. pneumoniae 44 Earth orbiting satellites 44 volcanic plume 44 ferric oxides 44 anthropogenically 44 UVC rays 44 HFC refrigerants 44 acidifying oceans 44 carbonate globules 44 greenhouse gas HFC 44 melt glaciers 44 single celled microorganisms 44 harmful ultra violet 44 ocean acidification 44 sequesters carbon 44 deca BDE 44 fracing fluids 44 Himalayan Glaciers 44 Nitrate contamination 44 Shchuchye facility 44 Atlantic thermohaline circulation 44 PM#.# particles 44 Fashion Movie Reviews 44 ILUC 44 Jupiter moon Io 44 Geomyces destructans 44 icy moon Enceladus 44 iron sulphate 44 radioactive decay 44 electromagnetic radiation EMR 44 Snowball Earth 44 misshapen proteins 44 Martian lander 44 Cow burps 44 carbon sinks 44 mold fungus 44 gases emitted 44 sulfur dioxide pollution 44 pristine Drakes Estero 44 phytoplankton bloom 44 hazardous solvents 44 crystalline silica dust 44 additive methyl tertiary butyl 44 midlatitudes 44 supercomputer simulations 44 hydrogen sulfide H2S 44 Warmer drier weather 44 habitable worlds 44 exosolar planets 44 benzene vapors 44 tardigrades 44 periodontal tissues 44 Particulates 44 persistent bio accumulative 44 neutrino particles 44 planktons 44 mineral olivine 44 Titan smoggy 44 Govindasamy Bala 44 Brigham Grette 44 thermosphere 43 Martian meteorite 43 Sulfur dioxide 43 extremophile bacteria 43 groundwater depletion 43 ocean acidity 43 stratospheric clouds 43 mutant mosquitoes 43 bacterial spores 43 terrestrial biosphere 43 Asbestos fibers 43 Friis Christensen 43 Earth ionosphere 43 atmospheric CO2 concentrations 43 icy comets 43 Shrinking glaciers 43 oVOCs 43 hydrosphere 43 NASA satellites orbiting 43 chemically reactive salt 43 Overharvesting 43 melting icebergs 43 oxide hydrofluorocarbons perfluorocarbons 43 embryo clones 43 Earth 43 oxidized mercury 43 permafrost thaws 43 Teflon coated cookware 43 gamma rays emitted 43 chemical malachite green 43 WISE telescope 43 phytoplankton zooplankton 43 amino acid cysteine 43 Hubble Space telescope 43 prussic acid 43 defective telomerase 43 Paraquat 43 cosmic radiation 43 Dichloro Diphenyl Trichloroethane DDT 43 Hubble gyroscopes 43 interplanetary spacecraft 43 Excessive moisture 43 Permian extinction 43 phosphorus pollution 43 sodium salts 43 stellar occultation 43 sulfuric gases 43 elemental composition 43 dimethyl sulphide 43 silicon monoxide 43 lunar dust 43 Martian terrain 43 manmade greenhouse gases 43 insulin secreting islet cells 43 icecaps 43 supersymmetric particles 43 renowned astrophysics observatory 43 carcinogenic polycyclic aromatic hydrocarbons 43 Cyanobacteria 43 wispy cirrus clouds 43 infrared observatory 43 Convection Rotation 43 hydrate deposits 43 Kyoto Protocal 43 Anisotropy Probe WMAP 43 solar flares 43 PAHs polycyclic aromatic hydrocarbons 43 fiery reentry 43 photosynthetic machinery 43 CO2 concentrations 43 stabilizing atmospheric concentrations 43 meteor impacts 43 contaminate aquifers 43 prussic acid poisoning 43 greenhouses gases 43 lunar soil 43 fullerene molecules 43 lunar craters 43 moon permanently shadowed 43 albedo reflectivity 43 radioactively 43 Schladow 43 exhaled carbon dioxide 43 Ozone Depleting 43 oceanic circulation 43 SINFONI 43 Coral bleaching 43 radioactive iodide 43 degrees Centigrade #.#F 43 Carbon tetrachloride 43 ExoMars rover 43 acidifying 43 distant supernovae 43 orbital insertion 43 Svante Arrhenius 43 Greenhouse Gases 43 Repeated concussions 43 nanoclays 43 Kuiper belt object 43 fluorotelomers 43 Stress hormones 43 particulate matter nitrogen oxides 43 #P/Churyumov-Gerasimenko 43 anthropogenic climate 43 enzymatic pathway 43 Siberian mammoths 43 greenhouse gases emitted 43 biodiverse ecosystems 43 absorbing carbon dioxide 43 TCE PCE 43 cryosphere 43 cenospheres 43 interstellar dust grains 43 pathogenic organism 43 Cockroach allergens 43 Severe infestations 43 Planck telescope 43 sunlike stars 43 algal toxins 43 draining aquifers 43 atmospheric aerosol 43 heat trapping pollutants 43 Cumbre Vieja 43 SCIAMACHY 43 methanogenesis 43 coronal loops 43 Siberian permafrost 43 N2O emissions 43 organochlorine pesticides 43 environmental toxicants 43 galaxy formation 43 extrasolar 43 fibroid tissue 43 flame retardant chemicals 43 skin wrinkling 43 Samuel Oschin Telescope 43 explosive volcanism 43 peatlands 43 moon gravitational pull 43 chlorine byproducts 43 orangutan habitat 43 interstellar dust samples 43 Infant botulism 43 single celled algae 43 Elevated concentrations 43 heatwaves floods 43 Tom Nalepa 43 carbon tetrachloride 43 galaxy supermassive black 43 DDT residues 43 O OREOS 43 Ordovician extinction 43 ultra violet UV rays 43 Melting glaciers 43 mineralogical composition 43 orbited Jupiter 43 Carbon Dioxide 43 WISE spacecraft 43 airglow 43 HABs 43 unmanned probes 43 lunar regolith 43 Gliese #c 43 overexploited depleted 43 gravitational microlensing 42 Degradation REDD 42 harmful vapors 42 endocrine disruption 42 Electromagnetic radiation 42 polar explorer Ernest Shackleton 42 disfigurations birthmarks 42 X ray observatory 42 teragrams 42 alpine glaciers 42 carcinogenic compounds 42 Flame retardants 42 Milankovitch cycles 42 Excess nitrogen 42 endocrine disruptor 42 PCBs dioxins 42 PCBs polychlorinated biphenyls 42 noxious gasses 42 hydrocarbons HC 42 proteosome 42 HFC# 42 Coral reef 42 Genetically modified foods 42 nitrogen oxides emitted 42 Gisela Winckler 42 marine phytoplankton 42 digesting enzyme 42 thermonuclear reactions 42 Solar flares 42 hydroxyl molecules 42 Greenland glaciers 42 Permian Triassic extinction 42 polar caps 42 CO2 42 eggshell thinning 42 Carbon Dioxide CO2 42 absorbs CO2 42 GZK cutoff 42 stony meteorites 42 heat trapping greenhouse 42 polycyclic aromatic hydrocarbons PAHs 42 airway irritation 42 folic acid deficiency 42 organic pollutants POPs 42 sea turtle populations 42 cometary material 42 Particulate emissions 42 OGLE TR #b 42 fissure eruption 42 Cabeus crater 42 mangrove ecosystems 42 Maunder minimum 42 NASA Spirit rover 42 bacteria Yersinia pestis 42 Particulate pollution 42 astrocyte cells 42 formamide 42 glycation 42 alpha particle 42 tholins 42 moonlets 42 heat trapping carbon dioxide 42 hydrochlorofluorocarbon HCFC 42 Polybrominated diphenyl ethers PBDEs 42 orbiting Kepler telescope 42 juglone 42 telescopic observations 42 NEAs 42 photochemical smog 42 deepwater corals 42 floods droughts heatwaves 42 tooth enamel 42 spectroscopic technique 42 Arctic Shelf 42 Anthony Remijan 42 methyl cyanide 42 exoplanetary 42 thermohaline circulation 42 Gliese #G 42 nitrous oxide emission 42 coral reef ecosystems 42 active volcanism 42 Joan Kleypas 42 ciguatera toxin 42 smoothest flattest spot 42 hydrofluorocarbons HFCs perfluorocarbons PFCs 42 polycyclic aromatic hydrocarbon 42 banned pesticide DDT 42 self replicating nanobots 42 infrared spectrometers 42 harmful algae blooms 42 seafloor habitats 42 toxic hydrogen sulphide 42 combustion byproducts 42 TrES 4 42 cosmic ray flux 42 ozone pollutant 42 respiratory irritant 42 acid sulphate 42 carbondioxide emissions 42 coral reefs 42 biospheric 42 Oxygen deprivation 42 sun harmful ultraviolet 42 Alycia Weinberger 42 Chicxulub impact 42 corona discharge 42 planets atmospheres 42 insect outbreaks 42 herbicide atrazine 42 permanently shadowed craters 42 planet Gliese #g 42 UV irradiation 42 Siberian Traps 42 galactic disk 42 male hormone androgen 42 Study Tanning beds 42 trihalomethanes THMs 42 moon Europa 42 clog waterways 42 magnetic monopoles 42 vertebrate animals 42 Gigatonnes 42 Huygens spacecraft 42 perfluorinated compounds PFCs 42 noble gases 42 Diesel exhaust 42 microscopic spores 42 Murchison meteorite 42 photochemical reaction 42 dieldrin 42 chondritic meteorites 42 lunar crust 42 Saturnian moon Titan 42 Galileo spacecraft 42 stony meteorite 42 carcinogenic toxins 42 gut mucosa 42 smallest exoplanet ever 42 chronic hemolysis 42 celestial phenomena 42 photochemical processes 42 Cretaceous Tertiary KT 42 atmospheric chemistry 42 whiz harmlessly 42 lung irritant 42 CO ² 42 satellites orbiting Earth 42 haemolysis 42 moon Io 42 airborne particulate matter 42 Antarctic icesheet 42 hypovolemic 42 permafrost thaw 42 floods heatwaves droughts 42 sulfation 42 automobile tailpipes 42 microscopic airborne particles 42 IBEX spacecraft 42 light separating spectrograph 42 bacterial decomposition 42 harmful gases 42 Starz Pillars 42 acidifies 42 dissolving coral reefs 42 beryllium dust 42 Mars Odyssey spacecraft 42 isotope composition 42 contrast chlorine disinfection 42 methemoglobin 42 neutral mass spectrometer 42 arctic plains 42 Hubble orbits 42 liquid ethane 42 Tunguska asteroid 42 cartilage degeneration 42 CoRoT 9b 42 SPICAM 42 meteoroids 42 orang utan habitat 42 Particulate Matter 42 GOES O 42 fluorinated chemicals 42 suspected carcinogen 42 chemtrail 42 HCFC 42 Mars lander 42 Hubble telescope 42 Ocean Acidification 42 airborne particulates 42 Apophis asteroid 42 foul smelling odor 42 planet HD #b 42 groundwater seepage 42 cosmic rays 42 GOCE satellite 42 hematite mineral 42 Martian volcanoes 42 Helios 2B 42 carbon emmissions 42 coastal marshland 42 acidification 42 biosignatures 42 orbiting Hubble telescope 42 Matt Kenseth Clint Bowyer 42 Martian dunes 42 dwelling organisms 42 Tiny particles 42 global warming 42 TCE vapors 42 xenobiotic 42 gasses emitted 42 fluorinated compounds 42 fainter objects 42 extrasolar planets orbiting 42 Venusian atmosphere 42 plankton blooms 42 Martian meteorites 42 particle smasher 42 Hair follicles 42 climate modelers 42 mold dust mites 42 calcium sulphate 42 Greenland Glaciers 42 Higgs bosons 42 Iceland Grimsvoetn volcano 42 Carbon sequestration 42 infrared photons 42 bioaccumulation 42 runaway thermonuclear 42 Cabeus 42 Canada Boreal Forest 42 martian rocks 42 peat swamp forests 42 gravitational interaction 42 perfluorinated chemicals 42 outgassing 42 UVA radiation 42 anthropogenic aerosols 42 Fluctuating temperatures 42 bark beetle epidemic 42 Seafloor 42 gravitons 42 decadal scale 42 earths 42 autoimmune reactions 42 Optic nerve 42 sonofusion 42 globalwarming 42 Nitrogen oxide 42 methane CH4 42 Oxidative stress 41 chlorinated compounds 41 Nuclear fission 41 amphibole asbestos 41 enormous sperm whales 41 KT boundary 41 St. Lucie Estuary 41 planets circling stars 41 Ultraviolet light 41 ppmv 41 asteroidal 41 Cosmic Microwave Background 41 toxic pollutant 41 CO -2 41 Fred Prata 41 Scientists theorize 41 mammal extinctions 41 hydrological cycles 41 Polluted runoff 41 Aram Chaos 41 glucocorticoid hormones 41 seabed sediments 41 Huygens mission 41 aromatic amines 41 NASA Stardust spacecraft 41 Lunar Prospector 41 tiny meteoroid 41 groundwater aquifers 41 rhythmic disturbances 41 proto planetary disk 41 Soil erosion 41 P/# A2