Paul Murton returns to visit more islands off the coastline, beginning with the Outer Hebrides. He resumes his journey on Eriskay, where he discovers how the remote location helped preserve a unique way of life for centuries - and also allowed locals to hide thousands of bottles of whisky from the excise men when a ship laden with the thirst-quenching cargo ran aground in 1941. The story inspired the 1949 movie Whisky Galore! Moving on to Barra, Paul goes foraging for cockles and visits the only airport in the world where scheduled flights land on the beach, then heads across to Vatersay, where he joins local fishermen trawling for lobsters

Discover how the Americans eradicated the Japanese fleet, and how a Russian sub destroyed German liner Wilhelm Gustloff

With the Spanish monarchy funding his trip, explorer Christopher Columbus sets sail. The discovery of the New World sparks a new age for the Spanish Empire

Bringing viewers the latest word on plate tectonics. Filmed in 15 geologic hotspots, from Antarctica to Tanzania, scientists unpack the geologic process of plate tectonics tied to the existence of life on our planet

How the German Siegfried Line and the French Maginot Line protected their countries during the Second World War by using modern technologies, which proved to be a fight between the two most sophisticated defence systems at the time