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Currently Playing: Hannah Fry on the End of Encryption

Could quantum computers crack the encryption protecting the world’s secrets? Is China already ahead in the race to build one? And could a single particle of light make spying impossible? Mathematician and The Rest Is Science host Hannah Fry joins David and Gordon to explain the looming quantum threat. From the code protecting our messages to intelligence agencies harvesting encrypted data for the future, Hannah reveals how quantum computing could transform espionage and why photons may provide our best defence. Plus, the extraordinary science behind pigeons that detect cancer, navigate using magnetic fields and were even trained to guide missiles. 0:00 Welcome Hannah Fry! 1:05 How do pigeons find their way home? 2:37 AD: HP 3:43 How pigeons can detect cancer 5:18 Could quantum computers expose our secrets? 6:14 How modern encryption works 9:01 How quantum computers could break encryption 11:26 Why spies need mathematicians 12:44 How quantum encryption protects data 15:28 Encoding secrets in a single photon 18:29 The global quantum computing race 19:46 Sending a photon from space 20:48 The relationship between science and espionage 22:09 Can science solve the JFK assassination? 23:55 Enriching uranium in the garden?! ----------------- ➡️ Join the Declassified Club to go deeper into the world of espionage with exclusive Q&As, interviews with top intelligence insiders, regular livestreams, ad-free listening, early access to episodes and live show tickets, and weekly deep dives into original spy stories. Members also get curated reading lists, special book discounts, prize draws, and access to our private chat community. Just go to https://therestisclassified.com 🔓 ------------------------------------------------------------------------------------------------------------------------ 🗞️ Sign-up for our free newsletter where producer Becki takes you behind the scenes of the show: https://mailchi.mp/goalhanger.com/tric-free-newsletter-sign-up ------------------ Get a 10% discount on business PCs, printers and accessories using the code TRIC10. Visit https://HP.com/CLASSIFIED for more information. T&C's apply. ------------------------------------------------------------------------------------------------------------------------- EXCLUSIVE NordVPN Deal ➼ https://nordvpn.com/restisclassified Upgrade your online protection with an all-in-one security app! It’s risk free with NordVPN’s 30-day money-back guarantee 🌍 ------------------------------------------------------------------------------------------------------------------------ ✅ Subscribe Here: https://www.youtube.com/@restisclassifiedsub_confirmation=1 🎙️ Listen To The Podcast: https://linktr.ee/triclassified -------------------------------------- 📱 Follow Us On Socials: Facebook: / https://www.facebook.com/profile.php?id=61567680193497 Instagram: / https://www.instagram.com/restisclassified/?hl=en TikTok: / https://www.tiktok.com/@restisclassified Twitter: / https://x.com/triclassified -------------------------------------- 📩 Email: classified@goalhanger.com -------------------------------------- Social Producer: Emma Jackson Producer: Becki Hills Head of History: Dom Johnson Exec Producer: Tony Pastor