PLOT
In the world's first media interview, shot in Paris in August 1886, the great photographer Nadar interviews the famous scientist and sceptic Chevreul on his 100th birthday. In their own words - originally recorded in shorthand - they discuss photography, colour theory, Moliere, the scientific method, the crazy ideas of balloonists, and - of course - how to live for 100 years. These two legends of the 19th century have a lively and interesting conversation. One was born before the French revolution; the other was destined to see the marvels of the aeroplane and the movies.