Edward Witten on 'the theory of everything'

Physicist Edward Witten on M-Theory, the leading contender for a 'theory of everything'.

• 28 mins

Sarah Blaffer Hrdy on human evolution and parenthood

Jim Al-Khalili discusses monkey infanticide and human parenting with Sarah Hrdy.

• 30 mins

Professor Sarah Harper on how population change is remodelling societies.

Jim Al-Khalili talks to Professor Sarah Harper about societal ageing and falling fertility

• 28 mins

Sir Michael Berry on phenomena in physics' borderlands

Professor Jim Al-Khalili meets one of Britain's greatest physicists, Sir Michael Berry

• 28 mins

Cathie Sudlow on data in healthcare

Jim Al-Khalili discusses population-wide health research with Professor Cathie Sudlow.

• 28 mins

Sir Harry Bhadeshia on the choreography of metals

Sir Harry Bhadeshia on his work in metallurgy and choreographing crystalline structures.

• 28 mins

Mercedes Maroto-Valer on making carbon dioxide useful

Jim Al-Khalili chats to a 'solutions scientist' about solving our CO2 problem.

• 28 mins

Michael Wooldridge on AI and sentient robots

Michael Wooldridge, professor of Computer Science at the University of Oxford, talks AI.

• 37 mins

Jonathan Van-Tam on Covid communication and the power of football analogies

Sir Jonathan Van-Tam discusses his work around infectious diseases and Covid-19.

• 36 mins

Sir Charles Godfray on parasitic wasps and the race to feed nine billion people

Professor Jim Al-Khalili talks to leading scientists about their life and work.

• 28 mins

Sheila Willis on using science to help solve crime

Forensic scientist Dr Sheila Willis on when the worlds of science and the law collide.

• 28 mins

Nick Longrich on discovering new dinosaurs from overlooked bones

Jim Al-Khalili talks dinosaurs and ‘one in a million year’ events with Dr Nick Longrich.

• 28 mins

Fiona Rayment on the applications of nuclear for net zero and beyond

Jim Al-Khalili talks to the president of the Nuclear Institute about all things nuclear.

• 28 mins

Hannah Critchlow on the connected brain

Neuroscientist Hannah Critchlow on connections within - and between - brains.

• 28 mins

Mike Edmunds on decoding galaxies and ancient astronomical artefacts

Mike Edmunds on the chemical make-up of galaxies and decoding the Antikythera Mechanism

• 32 mins

Conny Aerts on star vibrations and following your dreams

Asteroseismologist Conny Aerts expalins what stellar oscillations can teach us about space

• 28 mins

Anne Child on Marfan syndrome and love at first sight

Anne Child discusses her game-changing research into the genetic disorder Marfan syndrome.

• 28 mins

Janet Treasure on eating disorders and the quest for answers

Professor of Psychiatry Janet Treasure discusses her career researching eating disorders

• 28 mins

Raymond Schinazi on revolutionising treatments for killer viruses

Raymond Schinazi on how he helped revolutionise treatments for viruses, from HIV to Herpes

• 28 mins

Dawn Bonfield on inclusive engineering, sustainable solutions and why she once tried to leave the sector for good

Dawn Bonfield on how engineering can save the world - if it becomes more inclusive.

• 28 mins

Vicky Tolfrey on parasport research and childhood dreams of the Olympics

Sports scientist Vicky Tolfrey on supporting para athletes and working with ParalympicsGB.

• 28 mins

Kip Thorne on black holes, Nobel Prizes and taking physics to Hollywood

Astrophysicist Kip Thorne discusses his career, from researching black holes to hit movies

• 35 mins

Bill Gates on vaccines, conspiracy theories and the pleasures of pickleball

Bill Gates talks philanthropy, the power of vaccines and dealing with conspiracy theories.

• 35 mins

Darren Croft on killer whale matriarchs and the menopause

Killer whale matriarchs, their dependent sons and the evolution of the menopause

• 28 mins

Ijeoma Uchegbu on using nanoparticles to transform medicines

Ijeoma Uchegbu on using nanoparticles to transform medicines.

• 28 mins

Peter Stott on climate change deniers and Italian inspiration

Climate scientist Peter Stott on taking on sceptics and modelling our climate impact.

• 28 mins

Rosalie David on the science of Egyptian mummies

Rosalie David on what mummies reveal about life, death and medicine in ancient Egypt

• 28 mins

Anna Korre on capturing carbon dioxide and defying expectations

Environmental engineer Anna Korre on the race to decarbonise British industry.

• 28 mins

Tim Peake on his journey to becoming an astronaut and science in space

Jim Al-Khalili talks to Tim Peake in a special event recorded at London's Royal Society.

• 60 mins

Sir Magdi Yacoub on pioneering heart transplant surgery

Professor Sir Magdi Yacoub discusses his career at the cutting edge of transplant surgery.

• 28 mins