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1、increasericeharvestswithoutexpandingtheareaofthefields.In1950,Chinesefarmerscouldproduceonlyfiftymilliontonsofrice.Inarecentharvest,however,nearlytwohundredmilliontonsofricewasproduced.Theseincreasedharvestsmeanthat22%ofthwartworld’speoplearefedfromjust7%ofthefarmlandinChina.DrYuanisnowcirculat
2、inghisknowledgeinIndia,Vietnamandmanyotherlessdevelopedcountriestoincreasetheirriceharvests.Thankstohisresearch,farmersareproducingharveststwiceaslargeasbefore. DrYuanisquitesatisfiedwithhislife.However,hedoesn'tcareaboutbeingfamous.Hefeelsitgiveshimlessfreedomtodohisresearch.Hewouldratherkeept
3、imeforhishobbies.Heenjoyslisteningtovolinmusic,playingmah-jong,swimmingandreading.Spendingmoneyonhimselforleadingacomfortablelifealsomeansverylittletohim.Indeed,hebelievesthatapersonwithtomuchmoneyhasmoreratherthanfewertroubls.HethereforegivesmillionsofYuantoequipothersfortheirresearchinagricul
4、ture. Justdreamingforthings,however,costsnothing.LongagoDrYuanhadadreamaboutriceplantsastallassorghum.Eachearofricewasasbigasanearofcornandeachgrainofricewasashugeasapeanut.DrYuanawokefromhisdreamwiththehopeofproducingakindofricethatcouldfeedmorepeople.Now,manyyearslater,DrYuanhasanotherdream:t
5、oexporthisricesothatitcanbegrownaroundtheglboe.Onedreamisnotalwaysenough,especiallyforapersonwholovesandcaresforhispeople. Chemicalororganicfarming? Overthepasthalfcentury,usingchemicalfertilizershasvecomeverycommoninfarming.Manyfarmerswelcomedthemasgreatwaytostopcropdiseaseandincreaseproducti
6、on.Recently,however,scientistshavebeenfindingthatlong-termuseofthesefertilizerscancausedamagetothelandand,evenmoredangerous,topeople’shealth. Whataresomeoftheproblemscausedbychemicalfertilizers?First,theydamagethelandbykillingthehelpfulbacteriaandpestsaswellastheharmfulones.Chemicalsalsostayint
7、hegroundandundergroundwaterforalonogtime.Thisaffectscropsand,therefore,animalsandhumans,sincechemicalsgetinsidethecropsandcannotjustbewashedoff.Thesechemicalsinthefoodsupplybuildupinpeople’sbodiesovertime.Manyofthesechemicalscanle
