Navigating the Pacific without technology

Navigating the Pacific without technology

Author: BBC Radio 4 November 25, 2025 Duration: 28:06

How well can you remember the details of your childhood? Sometimes, the memories are there, but a little hazy. But what if you could trick your brain into thinking you looked like your younger self again? Would that help you recall more childhood memories? A new study has tried exactly this, so Claudia Hammond meets Professor Jane Aspell to have a go at an illusion that makes you believe you have a younger version of your face.

Imagine navigating across an ocean, only using the feel of waves hitting your boat to locate yourself. That’s exactly what master navigators in the Marshall Islands do, and in August, Professor Hugo Spiers and doctoral student Maria Ahmad joined local sailors on a three day voyage in the Pacific. They tell Claudia how Marshallese sailors are able to navigate in this way and what this can teach us about the brain.

And Claudia is joined in the studio by Daryl O’Connor, professor of psychology at the University of Leeds. Daryl shares how self-affirmation can be an easy intervention to boost wellbeing, and new research on why the more often you see a public health campaign, the less your brain engages with the message.

Presenter: Claudia Hammond Producer: Sophie Ormiston Editor: Ilan Goodman Studio Manager: Sue Maillot Production coordinator: Jana Bennett-Holesworth


Ever wondered why we do the things we do, or how our thoughts truly shape our reality? All in the Mind, from BBC Radio 4, moves beyond simple self-help to explore the intricate workings of the human psyche. Guided by Claudia Hammond, each episode is a thoughtful journey into the latest research and evidence from the worlds of psychology, neuroscience, and mental health. You'll hear from leading scientists, clinicians, and sometimes people with direct personal experience, all contributing to a deeper understanding of topics like memory, emotion, resilience, and perception. This isn't just a theoretical discussion; it's about connecting scientific discovery to the everyday experiences that define us. The conversations in this podcast are designed to be accessible yet deeply informative, stripping away jargon to reveal what the evidence really tells us about our minds. Whether it's unpacking the mechanics of anxiety, the science of happiness, or the mysteries of consciousness, Claudia's nuanced approach provides clarity and insight. Tune in for a compelling blend of personal stories and rigorous science that challenges assumptions and illuminates the hidden forces behind our behaviour. This is a space for curious listeners who want to look beneath the surface of thought and feeling, discovering the fascinating evidence that explains how we all operate.
Author: Language: English Episodes: 100

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