Explore the most extreme period of Earth's climatic history; scientists believe that over 600-million years ago, Earth froze over completely for millions of years and then warmed up rapidly.

The Panama Canal is one of the largest canals in the world and shaves 8,000 miles off what would otherwise be a two-week voyage for the 14,000 vessels that pass through it annually; the most risky manoeuvre is when northbound ships meet southbound.

A team of shipbuilders in South Korea has only 10 weeks to assemble the hull of the first combination oil tanker/icebreaker they've ever built.

Alain De Cadenet looks back at the incredible Rolls Royce Merlin aircraft engine, which powered most of the key war planes including the Hurricane, Spitfire, Mustang, Lancaster and Mosquito.

The harsh reality of the Venezuelan back-country forces the first person to quit; the team gets to their new camp but they find themselves without shelter when a severe storm rolls in; Nick and Michael make a meal out of termites.