Darwin and the tree of life

David Attenborough asks three key questions: how and why did Darwin come up with his theory of evolution? Why do we think he was right? And why is it more important now than ever before?

There are some who believe that Darwin's theory of evolution has weakened religion, fueled in part by Richard Dawkins' publishing phenomenon The God Delusion. Conor Cunningham argues that nothing could be further from the truth. Cunningham is a firm believer in the theory of evolution, but he is also a Christian. He believes that the clash between Darwin and God has been hijacked by extremists - fundamentalist believers who reject evolution on one side, and fundamentalist atheists on the other. Cunningham attempts to overturn what he believes are widely held but mistaken assumptions in the debate between religion and evolution.

The theory of evolution by natural selection is now scientific orthodoxy, but when it was unveiled it caused a storm of controversy, from fellow scientists as well as religious people. They criticised it for being short on evidence and long on assertion and Darwin, being the honest scientist that he was, agreed with them. He knew that his theory was riddled with 'difficulties', but he entrusted future generations to complete his work and prove the essential truth of his vision, which is what scientists have been doing for the past 150 years. Evolutionary biologist Professor Armand Marie Leroi charts the scientific endeavour that brought about the triumphant renaissance of Darwin's theory. He argues that, with the new science of evolutionary developmental biology (evo devo), it may be possible to take that theory to a new level - to do more than explain what has evolved in the past, and start to predict what might evolve in the future.