HowtheEarthWasMadepremieredasa90-minutedocumentaryspecial,narratedbyEdwardHerrmann,thatairedonTheHistoryChannelonDecember16,2007,andfocusedonthegeologicalhistoryofEarth.                  ddd                 ThetelevisionseriespremieredonFebruary10,2009.Each45-minuteepisodefocusesondifferentgeologicfeaturesandprocessesoftheEarth.Thefirstseason,spanning13episodes,concludedonMay5,2009.ThesecondseasonpremieredonNovember24,2009.