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1、Findingfoodsforthefuture随着世界人口增长和气候变化，人类在未来可能会面临食物短缺的问题。目前，许多科学家和研究人员正在与时间赛跑，试图找到好的解决办法。Peopleneedtofindoutnewfoodsbecausetheworldhassomanymouthstofeed.Asof2015,therearemorethansevenbillionpeopleonEarth,accordingtotheUnitedNations.Andby2100thatnumbermaydouble,accor
2、dingtosomepredictions(预测).Feedingallofthesepeoplemeansnotonlyimprovingthewayfoodisgrown,butalsofindingnewsourcesoffoods.Andthatneedisbecomingevermoreurgent.Ifnothingchanges,within35years,theworld’sappetite(胃口)willbegreaterthantheamountoffoodproduced.That’saccording
3、toareportreleasedlastyear.ItwaspreparedbytheGlobalHarvestInitiative,aprivateagriculturegroupbasedinWashington,D.C.Globalwarming,too,ischangingfoodproduction.Scientistspredictthatrisingtemperatureswillreducethegrowthofimportantcropslikewheatandcorn.Low-incomedevelop
4、ingcountrieswillbehitthehardest.Whenharvestsfall,cropsbecomemoreexpensive.Andsincethosefoodsarealsousedtofeedanimalslikecowsandpigs,meatprices,too,willrise.Allovertheworld,researchersareracingagainsttheclocktofigureouthowbesttofeedmorepeopleinthefuture.Andsomesurpr
5、isingideashavebeguntoappear.Threeyearsago,scientistsshowedthefirsthamburgermadefrommeatgrowninalab.Otherresearchersaredevelopingseedsthatcanmanagetoliveevenduringhightemperaturesanddrought.Stillothersarefindingwaystochangethegenes(基因)ofmeatanimalssotheyproducemorem
6、eatandcanstandtheheat.Forexample,researchersinSouthKoreaandChinaarelookingintodevelopingasuper-pig.Theseresearchershavechangedthegenesinatypeofpigtocreateananimalthatbecomesbiggerandheavier,packingonmoremuscle(肌肉).Typically,muscletissueisthepartofananimalthatbecome
7、smeatforfood.BiologistJin-SooKimatSeoulNationalUniversityinSouthKorealeadssuper-pigresearchthere.Kimseesalotofpossibleusesfortheeditingtechnology.Suchgenecorrection,hesays,mighthelpimprovecrops,fishandlivestock(家畜)keptonafarm.“We’renowworkingonchanginggenesinotherl
8、argeanimals,suchasdogsandcows,”hesays.Don’tgolookingforsuper-baconatyourlocalgroceryjustyet.Animalswithgeneschangedinthelabhaven’tyetbeenapproved
