The Naked Scientists: Social Media Addiction, Submarine Radiation, Lunar Cosmic Rays, and Waggle-Dance Bees

The Naked Scientists investigate whether social media features contribute to addiction and mental health harms, discuss monitoring radiation around the Soviet Consumolets submarine wreck, explain a newly observed lunar cosmic-ray shadow, and reveal how honeybees’ waggle dances depend on the attention of their colony audience.

Overview

The episode weaves together four science-and-society topics: social media as a potential driver of addictive behaviours, nuclear-radiation risks around a long-sunk submarine, a natural shielding effect identified in lunar-space radiation data, and a bee communication study that links dance performance to audience presence. The format combines expert commentary, recent research findings, and accessible explanations of complex phenomena.

Social Media Addiction: Neuroscience and Policy Implications

The show opens with a discussion of a landmark legal verdict naming Meta and YouTube as partially responsible for harm arising from addictive features like infinite scroll and algorithmic recommendations. Lucas Gunturer of the MRC Cognition and Brain Sciences Unit in Cambridge describes the distinction between popular notions of addiction and neuroscientific definitions. He notes that the current evidence base for social-media addiction as a standalone behavioural addiction is limited, while there is clear evidence that problematic use correlates with worse outcomes later in life. He emphasizes that high problem-use on social platforms is associated with two- to three-fold increased risk of suicidal behaviours or ideation in some studies, underscoring the need for careful interpretation and policy action.

Quote: “I certainly think that platforms putting products out there have some responsibility in what those products do, what sort of behaviours they facilitate” — Lucas Gunturer

Data Access and Accountability

The interview highlights a recurring theme in digital-mental-health research: access to platform data. Gunturer argues that robust, independent evaluation would be enhanced by mandated data access to examine platform mechanics under the hood. This theme dovetails with policy debates about age restrictions and interventions like bans or detoxes, which have yielded mixed evidence so far. The discussion also covers the tension between consumer protection and innovation, and the need to balance regulatory action with scientifically rigorous, data-driven analysis.

Quote: “There needs to be more mandated research data access so we can actually look at what’s going on under the hood” — Lucas Gunturer

Radiation Risk at Sea: Submarine Consumolets

The second feature shifts to a marine radiological story: the Sunken Soviet-era submarine Consomolets, lying about 1,700 metres deep in the Norwegian Sea, reportedly carried a reactor and two nuclear warheads. In 2019, researchers used a deep-sea ROV to sample water, sediment, and biota very close to the wreck, following earlier surface-based monitoring. Initial dives showed no signs of warhead-derived radionuclides in the surrounding environment, but later dives detected elevated radionuclides in water samples near an opening in the torpedo compartment. The team distinguished radionuclide fingerprints to identify sources: civilian reactor versus warheads, as well as global fallout, and found that sediment near the submarine did not show significant warhead-derived accumulation. Biota showed some radionuclide activity, but at levels unlikely to harm marine life. The researchers caution that full quantification of past and future releases remains challenging and depends on continued sampling and analysis.

Quote: “If this is a fingerprint, we can discriminate whether the material comes from a warhead or a civilian reactor or even from global fallout” — Justin Gwin, Norwegian Radiation and Nuclear Safety Authority

Cosmic Rays and the Moon: A Magnetic Shadow

Next, Megan Argo from the University of Lancashire explains a compelling result from China’s Chang’e 4 mission: a cavity in the distribution of cosmic rays around the Moon, observed over several years when the Sun’s activity was low. The Moon’s orbit, Earth’s magnetic field, and the solar wind create conditions under which cosmic-ray flux can dip for a few days each month when the Moon passes through a region where Earth's magnetic influence extends further toward the Moon. The detection is statistical, but the observed reduction could have practical implications for spaceflight planning, satellite electronics, and long-duration lunar missions, where shielding and radiation exposure accumulate over time. The key conclusion is that magnetic shielding effects, though modest in absolute numbers, could influence mission design decisions for radiation-sensitive equipment and astronauts during specific windows in the lunar cycle.

Quote: “If this is statistical, then it does make a difference, because if you’re sending astronauts up to the Moon for the long term, inside their base, they’re going to have a lot more shielding” — Megan Argo

Bee Waggle Dance: Audience-Driven Communication

The final segment shifts to animal behavior: how honeybees’ waggle dances convey distance and direction to food and how audience size shapes dance quality. James Nye describes the waggle dance, which encodes location relative to the sun, and notes that the dance occurs on a vertical surface in a dark hive where followers are contacted by the dancer. The study demonstrates that poor audiences can reduce the accuracy of distance and directional information, and even experienced dancers may perform imperfectly when the number of listeners is low. The researchers propose a two-way dynamic: the dancer’s performance and the followers’ attention both influence information transfer. The return runs—the dancer’s return to seek more listeners—reflect a strategic balancing act between seeking an audience and delivering information.

Quote: “It’s not just about the dancer, it’s about who’s watching” — James Nye

Wrap-Up

The episode closes with a tease of future topics and a reminder of the show’s support channels, emphasizing accessibility to scientific content and invitations to contribute to the program.