AHighDefinitionsimulcastofTLClaunchedSeptember1,2007.ItiscurrentlyavailableonCox,DishNetwork,DirecTV,ShawCable,InsightCommunications,BrightHouseNetworks,andComcast. Programming History TheLearningChannel:“aplaceforlearningminds” Theletters"TLC"comefromtheoriginalname:"TheLearningChannel."Thechannelwasfoundedin1972...