airpollutionisoneofthemajorproblemsofthemodernworld.agreatdealofenergyisneededtorunthefactoriesofmodernindustrialnations.automobile,trains,planesandbussesneedenergy,too.nearlyallofthisenergyisproducedbyburningfuels.theburningproduceswastes,someofwhichremainintheair,causingairpollution.
scientistsarefindingwaystostopairpollutionespeciallyinbigindustrialareasanddensely-populatedcities.theyarestudyingnewwaysofgeneratingelectricitythatmaybelessdamagingtotheenvironment.inthemeantime,manypowerplantsarebeingmodernizedtogiveofflesspollutedmaterial.also,engineerstrytodesignandlocatenewpowerplantstodominimumdamagetotheenvironment.
however,itmaybethatwestillhavealongwaytogobeforewehavea"clean"world.nearlyallofthecountriesaretryinghardtopreventandcontrolairpollution.thereindeedseemstobenoendtotasksthatenvironmentalistswillberequiredtodo.peoplewillcontinuallyfindnewwaystocontrolpollution.
pollutionisbecomingmoreandmoreseriousallovertheworld.asisshowninthecartoon,twocarsaregivingoffwastegasandthreepeoplearetryingtoavoidbreathinginthepoisonousgasbymaskingtheirfacewiththeirhands.thepoisonousgassentoffbyfactories,domesticappliancesandautomobileshasmadetheairunhealthyforpeopletobreathe.
thereisnodenyingthatautomobilesareindicationsofcivilization,progressanddevelopment;nevertheless,automobilescausetheseriousproblemofairpollution.scientistshavewarnedthatunlesseffectivemeasuresaretaken,theproblemofpollutionwilleventuallygetoutofhand.actually,peopleareshowingarealconcernovertheproblem.forexample,thereisanincreasinglyloudvoicefromthepublicforfirmactionagainstpollutionfromautomobiles.
indeed,theearthisourhomeandwehavethedutytotakecareofitforourselvesandforourdescendants.inmyopinion,weshouldworkoutconcretesolutionstotheproblemofpollutionfrompoisonousgasgivenoffbyautomobiles.forexample,theautomobilesshouldbeequippedwithadevicewhichcandisposeofwastegassoastopreventitfrompollutingair.onlyinthiswaycanwereallysolvetheproblemofairpollutioncausedbyautomobiles.