Winfried Hensinger, a leading expert on quantum technologies at the University of Sussex, dives into Google's new Willow quantum chip. This chip can complete tasks in five minutes that would take traditional computers 10 septillion years. Hensinger discusses the implications of this leap for industries like pharmaceuticals and medical imaging. He also explores the fundamental principles of quantum physics, the potential applications of this technology, and the competitive race to achieve breakthroughs in quantum computing.

Sophie Scott, a professor of cognitive neuroscience at University College London, dives into the fascinating world of laughter. She reveals how laughter serves various social functions, enhancing bonding among humans and animals. Sophie discusses its contagious nature and the differences between voluntary and involuntary laughter, shedding light on the neurobiology behind this joyful expression. The conversation highlights the evolutionary importance of laughter and its potential to improve our well-being.

James Kinross, a colorectal surgeon and microbiome researcher at Imperial College London, dives into the fascinating world of gut health. He discusses how our microbiome evolves from birth, the critical role diet plays in maintaining microbial diversity, and the surprising gut-brain connection that influences mental health. Kinross also highlights the gut's impact on attraction and provides tips for nurturing a healthy microbiome. Get ready to rethink your relationship with your gut!

Dr. Sally Adams, an alcohol researcher and associate professor at the University of Birmingham, dives into the science of hangovers and their remedies. She discusses the physiological processes behind hangovers, challenges in researching them, and evaluates popular hangover relief products. Dr. Adams debunks various myths around commercial solutions and highlights promising science-backed approaches to alleviate symptoms, including a novel probiotic designed to combat hangover effects. Prepare to rethink your post-party recovery!

Catherine Carstairs, a history professor at the University of Guelph, delves into the evolving attitudes towards fluoride and its impact on oral health and social inequality. She discusses the controversial legacy of fluoride use in public health, highlighting both its cavity-reducing benefits and the health concerns raised over the years. Along with insights from Oliver Jones, a chemistry professor, they explore public fears about fluoride in drinking water, including debates over IQ impacts and regulatory challenges in communities.

Damian Carrington, Guardian Environment Editor, discusses the fraught negotiations at COP29 in Azerbaijan. He reveals how wealthy nations pledged just $300 billion annually instead of the requested $1.3 trillion to support developing countries’ climate efforts. The conversation touches on the challenges of covering such a controversial event and the role of fossil fuel interests in undermining climate actions. Looking ahead, he outlines what we might expect from Brazil, the host of next year’s conference.

Explore the fascinating science behind yo-yo dieting, where fat cells 'remember' past obesity, posing significant weight loss challenges. Learn about urgent bird flu updates, including hospitalization cases and the virus's alarming spread among cattle and pigs. On a lighter note, discover how people in the British Isles excel at spotting fake accents, revealing insights into cultural identity and regional nuances. Delve into the intersection of public health and personal identity in this captivating discussion.

Hannah Devlin, a Guardian science correspondent and zero-gravity flight enthusiast, shares her thrilling experiences and insights into becoming an astronaut. She reveals the intense selection process, where only a few are chosen from over 20,000 applicants, featuring the inspiring journey of ESA’s Rosemary Coogan. The discussion highlights the physical and emotional challenges of space missions, essential traits like teamwork, and the rigorous training astronauts undergo. Devlin also touches on the importance of responsible exploration of resources beyond Earth.

Elizabeth Dunn, a psychology professor at the University of British Columbia, shares insights from her research on happiness and well-being. She critiques common happiness strategies, pointing out the lack of solid research behind them. Dunn emphasizes effective methods like expressing gratitude and fostering social connections. She discusses how small, consistent actions can gradually improve happiness and explores the impact of mindful spending on overall well-being. Tune in for practical tips to boost your happiness backed by science!

In this discussion, Johannes Eichstaedt, an assistant professor of psychology and AI at Stanford, delves into what truly makes countries happy. He reveals why Nordic nations top the happiness charts and explores the surprising joy levels in some Latin American countries. The conversation shifts to the influence of social relationships on happiness and suggests that prioritizing personal connections can lead to greater life satisfaction. Eichstaedt even advocates for policy changes like paternity leave to bolster family ties for enhanced well-being.