When Charles Darwin set about proving his theory of evolution, he had none of the advantages of modern genetics so he came up with some ingenious experiments of his own. In this program keen naturalist Jimmy Doherty recreates many of these investigations, digging up turf in Darwin's garden, roping down a cliff to explore the age of the Earth, and letting seeds soak in salt water for a month. These and other investigations gave Darwin the evidence he needed to publish his theory in 1859. By replicating them Jimmy uncovers a dynamic Darwin, and through them reveals the secrets of evolution. This is engaging science at its best.