20thcentury acidrain adverseeffects aerosols air aire airpollutants airpollution airquality airqualitymanagement analysis armedforces artificialsatellitesinearthsciences atmosphere atmospheric atmosphericchemistry atmosphericozone australia biosphere calidad cancer chlorofluorocarbons climate climatechange climaticchanges congresses cooperacióninternacional coopérationinternationale costeffectiveness couched'ozone detection developingcountries diplomatiekebetrekkingen droit earthsciences economicdevelopment emissiondensityzoning energyconsumption engineering environmental environmentalaspects environmentalhealth environmentalmanagement environmentalmonitoring environmentalpolicy environmentalriskassessment environmentalsciences europe finance gestion globalenvironmentalchange globalwarming globalwarminginternationallaw governmentpolicy greenhouseeffect greenhousegases healthaspects healthriskassessment histoire history internationalcooperation internet juvenileliterature kk8083 lawandlegislation liabilityforenvironmentaldamages observations oilsandfats organohalogencompounds ozon ozone ozone-depletingsubstances ozonedepletion ozonelayer ozonosfeer particles physiologicaleffect policysciences pollution pollutioncontrol pollutionprevention prevention qualité reduction remotesensing research riskperception réduction scienceandstate skin solarradiation stratosphere technology technologytransfer terrorism torts tropics ultravioletradiation ultravioletrays unitednations unitedstates wa30c6392000 wa754a84571979