"Revolutions" – What do all these things have in common—three grandfathers' lifetimes, two revolutions, 1750 Cornish steam engines for Cornwall's tin mines, water in mines, pumps, steam engines, Watt's copier, carbon paper, matches, phosphorus fertiliser, trains and gene-pool mixing, travelling salesmen, 24-hour production, educated women, the telephone, high-rise buildings, Damascus's swords, steel, diamond, carborundum, graphite, oscilloscope, television, Apollo space program, X-ray crystallography, DNA and gene therapy? You will learn these things in the first episode of Connections2, "Revolutions".