Nothing has shrunk the globe more than our extraordinary ability to talk to one another across the oceans and continents. Episode three of The Genius of Invention reveals the fascinating chain of events that made such every-day miracles possible. It tells the story of the handful of extraordinary inventors and inventions who helped build the modern world by harnessing electricity and electromagnetism to enable us to send instant messages across vast distances. Michael Mosley and academics, Prof Mark Miodownik and Dr Cassie Newland tell the amazing story of three more of the greatest and most transformative inventions of all time; the electric telegraph, the telephone and wireless communication. Our experts explain how these inventions came about by sparks of inventive genius and steady incremental improvements. They separate myth from reality in the lives of the great inventors and celebrate some of the most remarkable stories in British history.