May 15th, 2014
Episode 381 of 528 episodes
Photosynthesis is the process by which plants and many other organisms use sunlight to produce organic molecules. Photosynthesis arose early in evolutionary history and has been a crucial driver of life on Earth. In addition to providing most of the food on the planet, it is also responsible for maintaining atmospheric oxygen levels, and is thus almost certainly the most important chemical process ever discovered. Melvyn Bragg is joined by Nick Lane, Reader in Evolutionary Biochemistry at University College London; Sandra Knapp, Botanist at the Natural History Museum and John Allen, Professor of Biochemistry at Queen Mary, University of London.