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Series 2

David Bainbridge: Celebrating Middle Age

David Bainbridge sees the evolution of middle age as central to our species' success.

• 15 mins

Series 2

Angela Saini: Throwaway Technology

Science writer Angela Saini celebrates being a late adopter of new technology.

• 15 mins

Series 2

David Perks: Re-thinking Science in Schools

Physics teacher David Perks says current science teaching is short-changing children.

• 15 mins

Series 2

Anthony McGowan: Seeing Ourselves as Villains

Author Anthony McGowan thinks we should see ourselves as villains, not heroes.

• 15 mins

Series 2

James Lange: YouTube and Scientific Research

James Lange argues that YouTube videos can be a vital tool for sociology - and science.

• 15 mins

Series 2

Tim Smit: Britain's Not Broken

Tim Smit argues that if we learn to trust one another, Britain could be great again.

• 15 mins

Series 2

Paul Flatters: Childhood is Better Than Ever

Social trends analyst Paul Flatters argues that childhood today is better than ever before

• 15 mins

Series 2

Judith Clegg: Pay it Forward

Judith Clegg argues that start-up culture can make the world a dramatically better place.

• 15 mins

Series 2

Clare Allan: Liberation Through Lies

Novelist Clare Allan asks why lying gets such a bad press.

• 15 mins

Series 2

Gerard Darby: Science and Creativity

Writer Gerard Darby argues that creativity is just as vital as science in education.

• 15 mins

Series 2

Bali Rai: Stop Talking About Race

Author Bali Rai argues that stopping talking about race is the best way to stop racism.

• 15 mins

Series 2

Gordon Bridger: Re-thinking Foreign Aid

Economist Gordon Bridger says we should change the way in which we spend overseas aid.

• 15 mins

Series 2

Rob Hopkins: Sustainability and Community

Rob Hopkins argues for a new approach to energy, society and our surroundings.

• 15 mins

Series 2

Robin Gorna: Are We Losing the Fight Against AIDS?

Robin Gorna fears the world is losing the political will to deal with the problem of AIDS.

• 15 mins

The Best of Four Thought

David Baddiel introduces some of the best talks of Four Thought.

• 60 mins

Series 3

Bobby Cummines: How to Reform Criminals

Bobby Cummines, chief executive of UNLOCK, says ex-offenders need jobs to reduce crime.

• 15 mins

Series 3

Jules Evans: Socrates and Psychotherapy

Jules Evans explores what ancient philosophy can tell modern society about well-being.

• 15 mins

Series 3

June Andrews: A Revolution for Dementia Treatment

Prof June Andrews argues for a revolution in the approach to dealing with dementia.

• 15 mins

Series 3

Clare Melford: Buddah in the Boardroom

Clare Melford explains what she believes business leaders can learn from Buddhism.

• 15 mins

Series 3

Matthew Syed: Does Talent Trump Effort?

Matthew Syed says the importance of talent over effort should not be over-emphasised.

• 15 mins

Series 3

Martin Cassini: The Case Against Traffic Lights

Martin Cassini argues that the UK system for managing traffic needs radical reform.

• 15 mins

Series 3

Kate Smurthwaite: Stop Laughing at Sexism

Comedian Kate Smurthwaite argues it is time to stop laughing at sexism.

• 15 mins

Series 3

Paddy Docherty: Poverty and Entrepreneurship

Paddy Docherty says business is best placed to bring prosperity to impoverished nations.

• 15 mins

Series 3

Kamin Mohammadi: Life in Authoritarian Regimes

Kamin Mohammadi says life under an authoritarian regime is lived more creatively.

• 15 mins

Series 3

Sir Terry Farrell: Architects are Problem Solvers

Sir Terry Farrell says architects can solve the problems of Britain's public spaces.

• 15 mins

Series 3

Mitu Khandaker: Knowing Ourselves Through Computer Games

Computer games offer many opportunities for self-reflective thought, says Mitu Khandaker.

• 15 mins

Series 3

Colin Crooks: The Let-Down Generation

Social entrepreneur Colin Crooks argues that we are wrong to focus on youth unemployment.

• 15 mins

Series 3

Alice Bell: Improving Public Understanding of Science

Alice Bell tackles the myth of scientific literacy as a panacea to understanding science.

• 15 mins

Series 3

Leisa Rea: The Delight of Losing

In the year of the London Olympics, Comedian Leisa Rea ponders the delight of losing.

• 15 mins

Series 3

Naif Al-Mutawa: Art and Religion

Naif Al-Mutawa discusses the importance of interpreting and translating between cultures.

• 15 mins