Roger Penrose on black holes

Sir Roger Penrose talks to Jim Al-Khalili about black holes and flaws in quantum physics.

• 28 mins

Julia Higgins on polymers

Professor Dame Julia Higgins shares her passion for polymers with Jim Al-Khalili.

• 28 mins

Richard Morris on how we know where we are

Neuroscientist Richard Morris explains how brain cells remember.

• 28 mins

Neil de Grasse Tyson on Pluto

US science superstar, Neil de Grasse Tyson describes why Pluto isn't a planet.

• 28 mins

Michele Dougherty on Saturn

Michele Dougherty tells Jim Al-Khalili why she diverted the Cassini mission to Saturn.

• 28 mins

Jan Zalasiewicz on the Age of Man

Geologist Jan Zalasiewicz talks to Jim Al-Khalili about the Anthropocene, the Age of Man.

• 28 mins

Sadaf Farooqi on what makes us fat

Sadaf Farooqi describes how she found ten rare genetic disorders that cause obesity.

• 28 mins

Alison Smith on algae

Professor Alison Smith talks to Jim Al-Khalili about the many and varied uses of algae.

• 28 mins

Sean Carroll on how time and space began

Sean Carroll tells Jim why he abandoned Einstein for quantum entanglement.

• 28 mins

Simon Wessely on unexplained medical syndromes

Simon Wessely on medically unexplained symptoms and syndromes.

• 28 mins

Alan Winfield on robot ethics

Alan Winfield talks to Jim Al-Khalili about the ethics of robots, from drones to androids.

• 28 mins

Alison Woollard on what she has learnt from mutant worms

Geneticist Alison Wollard explains her enthusiasm for a tiny nematode worm.

• 28 mins

Daniel Dennett on the evolution of the human brain

Daniel Dennett talks to Jim Al-Khalili about the evolution of the human brain.

• 28 mins

Nick Fraser on Triassic reptiles

Nick Fraser tells Jim Al-Khalili about some extraordinary fossil finds.

• 28 mins

Liz Sockett on friendly killer bacteria

Jim Al-khalili talks to Professor Liz Sockett about the evil genius of predatory bacteria.

• 28 mins

Graham MacGregor on tackling the demons in our diet

Jim Al-Khalili talks to Prof Graham MacGregor about his remarkable war on sugar and salt.

• 28 mins

Ann Clarke on The Frozen Ark

Jim Al-Khalili talks to Dr Ann Clarke about preserving global animal DNA in The Frozen Ark

• 28 mins

Fay Dowker on a new theory of space-time

Fay Dowker and Jim Al-Khalili discuss the texture of space-time.

• 28 mins

Ottoline Leyser on how plants decide what to do

Ottoline Leyser talks to Jim Al-Khalili about how plants decide to grow the way they do.

• 28 mins

Tim O'Brien on transient stars and science and music festivals

Jim Al-Khalili talks transient stars and music festivals with Tim O'Brien of Jodrell Bank.

• 28 mins

Tamsin Mather on what volcanic plumes reveal about our planet

Tamsin Mather explains what volcanic plumes tell us about our planet, past and present.

• 28 mins

Jennifer Doudna

Jennifer Doudna talks to Jim Al-Khalili about her research that is transforming genetics.

• 28 mins

Tracey Rogers on leopard seals and Antarctica

Singing leopard seals and other perils of research in Antarctica.

• 28 mins

Lucie Green on the sun

Jim Al-Khalili talks to astrophysicist Lucie Green about studying the sun.

• 28 mins

Steve Cowley on Nuclear Fusion

Jim Al-Khalili asks Steve Cowley if we will ever have energy from nuclear fusion.

• 28 mins

Tim Birkhead on bird promiscuity

Sex, guillemots and the virtuoso finch.

• 28 mins

Ellen Stofan on being NASA chief scientist

Ellen Stofan, former chief scientist at NASA, talks to Jim Al-Khalili.

• 28 mins

Adrian Thomas on the mechanics of flight

Zoologist and inventor Adrian Thomas talks to Jim Al-Khalili about the mechanics of flight

• 28 mins

Eben Upton on Raspberry Pi

The computer that costs little more than a toasted sandwich.

• 28 mins

Eugenia Cheng on the mathematics of mathematics

Jim talks to mathematician Eugenia Cheng about mathematics, music and baking.

• 28 mins