Nature

Life Without

What if, one day, something essential to our world suddenly vanished? No warning. No explanation. Just gone. What happens next?

Life Without is a roundtable-style podcast that explores this fascinating and thought-provoking question with insight, evidence-based assumptions and a range of perspectives. Hosted by Alan Davies, each episode brings together 2 guests, scientists, psychologists, economists, sociologists and journalists to discuss the unexpected consequences of losing something vital to our world.

Each episode starts with a bold, imaginative question: What would happen if something fundamental—like the moon, salt, sleep, or even something as random as rats—suddenly disappeared from the world? What’s the immediate fallout? How does society cope? And how long would it take before things started unravelling?

Latest Episodes:

Life Without Bats Oct 16, 2026

Show notes

No bats in the night sky. In this episode of Life Without, Alan Davies imagines a world where bats suddenly disappear. From tiny insect-eaters to fruit bats, what would humanity miss when these remarkable mammals are gone?

Alan explores the role bats play in controlling insects, pollinating plants and dispersing seeds. He also examines their surprising social lives, their unusual immune systems, and what they might teach us about disease and ageing.

Featuring Professor Kate Jones, Professor of Ecology and Biodiversity at UCL, and Dr Christina Stanley, Associate Professor in Animal Behaviour and Welfare at the University of Chester.

An ITN production for BBC Radio 4

Life Without S2 - Trailer Oct 09, 2026

Show notes

What if, one day, something essential to our world suddenly vanished? No warning. No explanation. Just gone. What happens next?

Life Without North America Apr 17, 2026

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What would happen to the world if the USA disappears? In this episode of Life Without, Alan Davies explores a planet earth without the land mass of North America. How would opening up the Atlantic impact us in the UK and what would the disappearance of North American produce and people mean for the rest of the world?

This episode features Dr. Anjana Khatwa an award winning Earth Scientist and author, and Tori Tsui, a climate justice activist, author, and mental health advocate.

An ITN production for BBC Radio 4

Life Without Standard Time Apr 10, 2026

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Spring Forward, Fall Back or what if we just didn’t? In this episode of Life Without, Alan Davies looks at how our circadian rhythms would be impacted if we simply stopped changing the clocks.

Some scientists have argued to do away with the twice-yearly clock change in order to see some beneficial impacts on our health. So why have some parts of the world adopted this system while places like Russia and Mexico don’t use it at all?

This episode features Aarti Jagannath, a leading chronobiologist and Associate Professor at the University of Oxford, and Dr Rebecca Struthers who is a watchmaker, author, historian and Honorary Research Fellow at University of Birmingham.

An ITN production for BBC Radio 4

Life Without Sleep Apr 03, 2026

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We all know the importance of sleep, but what happens if we literally can’t? In this episode of Life Without, Alan Davies breaks down how long a world full of sleepy people could function.

From memory loss to hallucinations, sleep is keeping all our brains working and our bodies functioning. Without it, we would surely die, but what might happen before we do and has tech found solutions to life without sleep?

This episode features Derk-Jan Dijk a expert in sleep and Professor at the University of Surrey, and Dr Sophie Bostock an educator dedicated to the science of sleep and performance.

An ITN production for BBC Radio 4

Life Without Writing Mar 27, 2026

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How many of us even use a pen these days and what if we never picked one up ever again? In this episode of Life Without, Alan Davies looks at our ancient skill of handwriting. If we could no longer write, would it really matter?

From the feather with ink to our daily ballpoint, writing has been the most personal and poetic way to communicate throughout human history. But as less of us pick up a pencil, would life without writing work?

This episode features Nels Abbey a critically acclaimed writer and Dominic Wyse a Professor of Early Childhood and Primary Education at the UCL Institute of Education.

An ITN production for BBC Radio 4

Life Without Sex Mar 20, 2026

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Gen Z are famously having less of it. Do we even need it all? In this episode of Life Without, Alan Davies looks at what happens when we lose one of our most primal instincts?

Where do we currently stand in reproductive technology and how important is sex in understanding our biological function?

This episode features Miranda Kane a comedian, writer, and former sex worker who uses her platform to destigmatise the sex industry and Sarah Johns, a biological anthropologist at Kent and Medway Medical School with specialized expertise in human sexual behaviour.

An ITN production for BBC Radio 4

Life Without Bees Mar 13, 2026

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No more buzzing, no more honey, no more bees – so then what? In this episode of Life Without, Alan Davies looks at how dependent we are on the existence of our busy little friends.

From how they impact our diets to the medicinal qualities of their produce (honey and beeswax), we learn what is missing from the shelves, when bees are missing from our lives.

This episode features Simon Potts ecologist and Professor of Biodiversity at Reading University and Alison Benjamin co-founder of Urban Bees and author of A World Without Bees.

An ITN production for BBC Radio 4

Life Without Salt Mar 06, 2026

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A low salt diet is one thing, but a no salt life? In this episode of Life Without, Alan Davies discusses how Sodium Chloride affects our world and our taste buds.

From our kitchens to our oceans, salt is everywhere and our brains and bodies would struggle without it. How long before we struggle and what alternatives might be available today?

This episode features Mark Miodownik, Professor of Materials and Society at UCL and nutritional food scientist, bestselling author and broadcaster, Kumud Gandhi.

An ITN production for BBC Radio 4

Life Without Worms Feb 27, 2026

Show notes

They wriggle and writhe in the earth beneath us, surely, we’d be fine if they vanished? In this episode of Life Without, Alan Davies looks beneath our feet deep into the soil and the hard workers who live there.

This episode features Mark Hodson, Professor of Environmental Science and soil sister, horticulturist, and founder of GoGrowWithLove, Sandra Salazar D’eca.

An ITN production for BBC Radio 4