The Engine that powers the world
Mark Evans tells the surprising story of the hidden powerhouse behind the globalised world – the diesel engine, a 19th-century invention that has become indispensable to the 21st.
https://www.youtube.com/watch?v=udR7wqCgylU
The full episode can be viewed at : http://www.bbc.co.uk/iplayer/episode/b06csy8c/timeshift-series-15-3-the-engine-that-powers-the-world