Details: Frustration builds as the scientists struggle to complete a set of marine challenges without the help of modern technology. With only a few bits of basic kit to help them and a remote beach-side workshop as their base, the team's first test is to mount an expedition to find and explore a shipwreck off Zanzibar's west coast.

Our scientists-without-laboratories are back and they're on top of the world! They're based high up in the peaks of Colorado in an old ore-processing mill in the spectacular Rocky Mountains. Their first task will be to make the mill safe and habitable, finding a way to provide power and light using only the natural resources around them. In later episodes they'll be making a fire extinguisher to keep themselves safe and cleaning up the environment after a century of pollution. They'll get to know this peak very well while determining how high it is and how much it weighs. At an altitude of 3000m, they face physical as well as scientific obstacles - it's the highest Rough Science ever!