Professor JoAnn Manson from Harvard Medical School discusses the lack of benefits of multivitamins in enhancing longevity, with some studies suggesting a 4% increase in mortality risk. The podcast explores the importance of nutrient-deficient diets, risks of megadose supplements, and how to navigate the multivitamin market effectively.

Energy correspondent Jillian Ambrose and UK technology editor Alex Hern discuss the environmental impact of AI's energy consumption on climate targets. They explore the escalating energy demand of data centers, tech companies' investments in renewable energy, and AI's potential to enhance energy efficiency while addressing government challenges in regulation and promoting sustainability.

Guest Josh Davis discusses the hidden same-sex behaviors in animals, shedding light on historical suppression and modern acknowledgment. They explore examples from penguins to Kochchafer beetles, challenging misconceptions and delving into the intersection of homosexuality in nature and human behavior.

Learn about the modern obsession with blood sugar monitoring and personalized nutrition, including debates on the effectiveness of glucose tracking. Hear from experts discussing the impact of glucose on health, the challenges of interpreting continuous glucose monitor data, and the benefits of personalized nutrition programs. Explore the role of self-monitoring in health practices and the importance of a holistic approach to overall well-being.

The guest, Nicola Davis, discusses the global reproductive crisis and the conflicting studies on declining sperm counts. They explore potential causes like genetic conditions, lifestyle factors, and microplastic contamination. The podcast emphasizes the need for continued research on male fertility.

Caroline Lucas reflects on her 14 years as the only Green MP, urging for more environmental focus in politics. She discusses the Green Party's dedication to science-based policies and the importance of addressing climate change. Lucas also talks about transitioning to climate activism post-parliament and supporting a fair green transition.

Psychology study shows ambivalence can lead to supporting extremist actions. Professor Richard Petty discusses what drives extremism in politics, how to combat it, and the role of politicians in perpetuating polarization.

Dr Jennifer Rohn discusses the mysteries of urinary tract infections (UTIs) and their link to antibiotic resistance. They delve into the challenges of detecting UTIs accurately, the harrowing experiences of those with recurring undetected UTIs, and the urgent need for research into new treatment options like the Uramune vaccine and probiotics.

This podcast covers a range of intriguing topics, including a black hole awakening, a new blood test for early Parkinson's detection, and how some individuals evade Covid infection. It also delves into immune responses to Covid, AI technology for Parkinson's diagnosis, and the collaboration between British and Chinese scientists.

Global environment editor Jon Watts and biodiversity reporter Phoebe Weston discuss UK parties' climate pledges. They analyze the level of action needed, comparing manifestos and exploring parties' approaches. Scientists urge ambitious steps to combat the climate crisis and biodiversity threats. Voters' concerns clash with politicians' focus on other issues.