George Clooney’s take on McCarthyism and journalistic ethics tells the story of Edward Murrow and his attempt to marshal the power of television on the side of truth. A nostalgic vision of a world long gone – or a necessary reminder of what’s still worth fighting for?

Helen Lewis is a writer, broadcaster and prolific journalist whose work has appeared everywhere from The Atlantic to Private Eye. Her most recent book is The Genius Myth: The Curious History of a Dangerous Idea. Last year she was our guide to another film about television: Network.

What can we learn from Wikipedia's example about democracy, trust and knowledge? David Runciman talks to Wikipedia's founder Jimmy Wales in a special Science Festival episode of Past Present Future, the history of ideas podcast.

Once dismissed as a failed experiment, Wikipedia is now a global utility, viewed billions of times each month. How did strangers on the internet learn to trust one another and build the largest collection of knowledge in history? At a time when public trust is at an all-time low, Jimmy and David explore what Wikipedia reveals about what's missing and what's possible in contemporary society and how it might offer a blueprint for building things that last.

There will be a book signing after this event.

Kazuo Ishiguro’s haunting 2005 novel of the lives and loves of human clones became an equally haunting and unsettling film five years later. How should we imagine a world in which some people exist to provide body parts for others? In what ways is this our world?

Adam Rutherford is a geneticist and science communicator who has written and broadcast widely about genetic engineering and the human future. He is a regular host of BBC Radio 4’s Start the Week and President of the British Humanist Association.