Sezon 7
Bölümler
1 The Sun 20 Haz 1966 2 Natural History Of The Niagara Gorge 27 Haz 1966 3 Air And Water Pollution 4 Tem 1966 4 The Battle Against Biting Insects 11 Tem 1966 5 Air Conditioning - Natural And Man-Made 18 Tem 1966 6 The Physics Of Sailing 25 Tem 1966 7 Epidemics 1 Ağu 1966 8 Summer Storms 8 Ağu 1966 9 Fishing And The Splake 15 Ağu 1966 10 The Value Of Our Parks 22 Ağu 1966 11 Forest And Fires 29 Ağu 1966 12 Water On The Level 5 Eyl 1966 13 Galapagos: Darwin 4 Eyl 1966 14 Galapagos: The Islands 11 Eyl 1966 15 Galapagos: New Beings 18 Eyl 1966 16 Galapagos: Ways Of Survival 25 Eyl 1966 17 Galapagos: Living Laboratory 2 Eki 1966