Twoofthemostimportantquestionsthatwecurrentlyneedtoanswer regardingthe environmentare:'Howcanwe saveenergyand resources?' and'Howcanweslowdownor reduceglobalwarming?'.
OnemanwhoistryingtoanswerthesequestionsisElonMusk.Musk madehis fortunewith PayPa~the onUnepaymentsystem,and has investedhis moneyin variousprojectsthat go somewayto answering thesequestions.
Oneof hisprojects,SpaceXs,tartedin2002.ThecompanythatMusk setupmakesrocketsthatcansafelyreturntoEarthandlandvertically so that they can be reused.Up until now,rocketshaveusuallybroken upontheirwaybackto Earth.Muskbelievesthatthisisanunnecessary wasteofmoneyandresourcesw,hichcanbesavedifrocketsarereused. Itcostsaround$100milliontolauncharocket,butbyreusingrockets, thiscanbereducedby$30-40 million.Sofar,SpaceXhassuccessfully launchedtworocketsthathavereturnedbackto Earth.Therocketscarry satellitesintoorbitandtheycanalsodeliverfoodandequipmentothe InternationaSlpaceStation.
AnotherofMusk'sprojectsistheTeslat,hefirst100%electricsportscar. TeslaMotorshassoldover100,000cars,eachcostingintheregionof $69,000 to $100,000.
Inthefuture,thecompanyisgoingtoproducelessexpensivmeodels. Thecompanybelievesthatthemarketforitscarswillgrowaspeople moveawayfrom petrol-drivencars.Thiswill helpreducepollutionand, in tum, globalwarming.