Episode 1 "Engineering" 　　Episode 2 "Electricity" 　　Episode 3 "Eating" 　　Episode 4 "Exploration" 　　Episode 5 "Europe" 　　Episode 6 "Everything, Etc." 　　Episode 7 "Espionage" 　　Episode 8 "Eyes & Ears" 　　Episode 9 "Entertainment" (Children in Need Special) 　　Episode 10 "England" 　　Episode 11 "Endings" 　　Episode 12 "Empire" (Christmas Special) 　　Episode 13 "Elephants"