The Reith Lectures

The Cambridge cosmologist Professor Stephen Hawking delivers the second of his BBC Reith Lectures on black holes.

Professor Hawking examines scientific thinking about black holes and challenges the idea that all matter and information is destroyed irretrievably within them. He explains his own hypothesis that black holes may emit a form of radiation, now known as Hawking Radiation. He discusses the search for mini black holes, noting that so far "no-one has found any, which is a pity because if they had, I would have got a Nobel Prize." And he advances a theory that information may remain stored within black holes in a scrambled form.

The programmes are recorded in front of an audience of Radio 4 listeners and some of the country's leading scientists at the Royal Institution of Great Britain in London.

Sue Lawley introduces the evening and chairs a question-and-answer session with Professor Hawking. Radio 4 listeners submitted questions in their hundreds, of which a selection were invited to attend the event to put their questions in person to Professor Hawking.

Producer: Jim Frank.

Professor Stephen Hawking delivers the first of his two BBC Reith Lectures on black holes.

These collapsed stars challenge the very nature of space and time, as they contain a singularity - a phenomenon where the normal rules of the universe break down. They have held an enduring fascination for Professor Hawking throughout his life. Rather than see them as a scary, destructive and dark he says if properly understood, they could unlock the deepest secrets of the cosmos.

Professor Hawking describes the history of scientific thinking about black holes, and explains how they have posed tough challenges to conventional understanding of the laws which govern the universe.

The programmes are recorded in front of an audience of Radio 4 listeners and some of the country's leading scientists at the Royal Institution of Great Britain in London.

Sue Lawley introduces the evening and chairs a question-and-answer session with Professor Hawking. Radio 4 listeners submitted questions in their hundreds, of which a selection were invited to attend the event to put their questions in person to Professor Hawking.

Producer: Jim Frank.

The surgeon and writer Atul Gawande calls for a new focus on medical systems to ensure doctors work more effectively, alongside far greater transparency about their performance.

Speaking to an audience at the India International Centre in Delhi, he describes the story of medicine over the last century through the prism of his own family. From a grandmother who died in rural India from malaria - a preventable disease - to the high-tech medicine of today. He argues that despite its scientific advances, medicine has failed to exploit its knowledge successfully. In both the developed and developing world doctors do not carry out basic procedures effectively and often do not act in the best interests of their patients. He calls for wide-ranging research into the systems by which medical care is delivered, alongside far greater transparency about performance.

The Reith Lectures are introduced and chaired by Sue Lawley and produced by Jim Frank.

Surgeon and writer Atul Gawande calls for a new approach to the two great unfixable problems in life and healthcare - ageing and death. He tells the story of how his daughter's piano teacher faced up to terminal cancer and the crucial choices she made about how to spend her final days. He says the teacher was only able to do this because of an essential honesty from her physicians and the people around her. Dr. Gawande argues that the common reluctance of society and medical institutions to recognise the limits of what professionals can do can end up increasing the suffering of patients towards the end of life. He proposes that both doctors and individuals ask a series of simple but penetrating questions to decide what kind of treatment is appropriate - or whether treatment is appropriate at all. And he praises the values of the hospice movement, in putting quality of life before prolonging life.

The programme was recorded at The Royal Society in Edinburgh in front of an audience.

The Reith Lectures are introduced and chaired by Sue Lawley and produced by Jim Frank.

The surgeon and writer Atul Gawande argues that better systems can transform global healthcare by radically reducing the chance of mistakes and increasing the chance of successful outcomes.

He tells the story of how a little-known hospital in Austria managed to develop a complex yet highly effective system for dealing with victims of drowning. He says that the lesson from this dramatic narrative is that effective systems can provide major improvements in success rates for surgery and other medical procedures. Even a simple checklist - of the kind routinely used in the aviation industry - can be remarkably effective. And he argues that these systems have the power to transform care from the richest parts of the world to the poorest.

The programme was recorded at The Wellcome Collection in London before an audience.

The Reith Lectures are chaired and introduced by Sue Lawley and produced by Jim Frank.

Surgeon and writer Atul Gawande explores the nature of fallibility and suggests that preventing avoidable mistakes is a key challenge for the future of medicine.

Through the story of a life-threatening condition which affected his own baby son, Dr. Gawande suggests that the medical profession needs to understand how best to deploy the enormous arsenal of knowledge which it has acquired. And his challenge for global health is to address the inequalities in access to resources and expertise both within and between countries.

This first of four lectures was recorded before an audience at the John F Kennedy Presidential Library and Museum in Dr. Gawande's home town of Boston in Massachusetts. The other lectures are recorded in London, Edinburgh and Delhi.

The series is introduced and chaired by Sue Lawley. The producer is Jim Frank.

In the last of his four Reith Lectures, recorded in front of an audience at Central St Martins School of Art in London, the artist Grayson Perry discusses his life in the art world; the journey from the unconscious child playing with paint, to the award-winning successful artist of today. He talks about being an outsider and how he struggles with keeping his integrity as an artist. Perry looks back and asks why men and women throughout history, despite all the various privations they suffered, have always made art. And he discusses the central purpose of creating art - to heal psychic wounds and to make meaning.

In the third of four lectures, recorded in front of an audience at The Guildhall in Londonderry, the artist Grayson Perry asks if revolution is a defining idea in art, or has it met its end?

Perry says the world of art seems to be strongly associated with novelty. He argues that the mainstream media seems particularly drawn to the idea of there being an avant-garde: work is always described as being "cutting edge," artists are "radical," shows are "mould-breaking," ideas are "ground-breaking," "game-changing" or "revolutionary," We are forever being told that a new paradigm is being set.

Grayson Perry was awarded the Turner Prize in 2003 and is the first contemporary artist to deliver the Reith Lectures. He is best known for his ceramic works, print making, drawing, sculpture and tapestries as well as being a flamboyant cross-dresser.

The Reith Lectures are presented and chaired by Sue Lawley and produced by Jim Frank.

The award-winning artist Grayson Perry asks whether it is really true that anything can be art. We live in an age when many contemporary artists follow the example of Marcel Duchamp, who famously declared that a urinal was a work of art. It sometimes seems that anything qualifies, from a pile of sweets on a gallery floor to an Oscar-winning actress asleep in a box. How does the ordinary art lover decide?

In the first of four lectures, recorded in front of an audience at Tate Modern in London in 2013, the artist Grayson Perry reflects on the idea of quality and examines who and what defines what we see and value as art. He argues that there is no empirical way to judge quality in art. Instead the validation of quality rests in the hands of a tightknit group of people at the heart of the art world including curators, dealers, collectors and critics who decide in the end what ends up in galleries and museums. Often the last to have a say are the public.