简介：GobeyondthesurfaceinEarthMachine　　ThesurfaceofourplanetmayseemstaticbutasEarthMachinereveals,nothingcouldbefurtherfromthetruth.Everydaythereareatleast50bigearthquakesand12powerfulvolcaniceruptions.Everysecondthegroundbeneathourfeetmovesandchanges.　　BytravellingtothecentreoftheEarthtorevealhowtheengineatitsheartaffectsourlives,anddrainingtheoceanstoexposesomeofthehiddenwondersdrivingourexistence,EarthMachinerevealswhygeologyissuchanimportantpartofourlives,whetherweareawareofitornot.Thisistheplanetasyou'veneverseenitbefore.　　EarthMachineisasciencedocumentaryseriesfromtheBBC.Theepisodesintheseriesinclude:　　Episode1-Land　　Episode2-Ocean…