HowtheEarthWasMadepremieredasa90-minutedocumentaryspecial,narratedbyEdwardHerrmann,thatairedonTheHistoryChannelonDecember16,2007,andfocusedonthegeologicalhistoryofEarth.
ThetelevisionseriespremieredonFebruary10,2009.Each45-minuteepisodefocusesondifferentgeologicfeaturesandprocessesoftheEarth.Thefirstseason,spanning13episodes,concludedonMay5,2009.ThesecondseasonpremieredonNovember24,2009.
地球起源第一季在线观看,由
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