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1、SEVENWAYSto SAVETHEWORLDA) Forgettheoldideathatconservingenergyisaformofself-denial-ridingbicycles,dimmingthelights,andtakingfewershowers. Thesedaysconservationisallaboutefficiency: gettingthesame-orbetter-resultsfromjustafractionoftheenergy. Whenaslumpinbusinesstravelfor
2、cedUlrichRomertocutcostsathisfamily-ownedhotelinGermany,hereplacedhundredsofthehotel’swastefullightbulbs,gettingthesamelightfor80percentlesspower. Heboughtanewwaterboilerwithadigitallycontrolledpumpandwrappedinsulationaroundthepipes. Spendingabout€100,000ontheseandotherimpr
3、ovements,heslashedhis€90,000fuelandpowerbillby€60,000. Asabonus,thehotel’slowerenergyneedshavereduceditsannualcarbonemissionsbymorethan200metrictons.“Forus,savingenergyhasbeenvery,veryprofitable,”hesays.“Andmostimportantly,we’renotgivingupasinglecomfortforourguests.”B) E
4、fficiencyisalsoagreatwaytolowercarbonemissionsandhelpslowglobalwarming.Butthebestargumentforefficiencyisitscostor,moreprecisely,itsprofitability.That’sbecausequicklygrowingenergydemandrequiresimmenseinvestmentinnewsupply,nottomentionthedrainofrisingenergyprices.C) Nowonde
5、refficiencyhasmovedtothetopofthepoliticalagenda. OnJan10,theEuropeanUnionunveiledaplantocutenergyuseacrossthecontinentby20percentby2020. LastMarch,Chinaimposeda20percentincreaseinenergyefficiencyby2020.EvenGeorgeW.Bush,theTexasoilman,isexpectedtotalkaboutenergyconservationi
6、nhisStateoftheUnionspeechthisweek.D) Thegoodnewsisthattheworldisfullofproven,cheapwaystosaveenergy. Herearetheseventhatcouldhavethebiggestimpact:E) InsulateSpaceheatingandcoolingeatsup36percentofalltheworld’senergy. There’svirtuallynolimittohowmuchofthatcanbesavedaspro
7、totype “zero-energyhomes”inSwitzerlandandGermanyhaveshown. There’sbeenasurgeinnewwaysofkeepingheatinandcoldout(orviceversa). Themostadvancedinsulationfollowsthelawofincreasingreturns:ifyouaddenough,youcanscaledownoreveneliminateheatingandair-conditioningequipment,loweringco
8、stsevenbeforeyoustartsavingonutilitybills. Studieshaveshownthatgreenworkplaces(one
