Jennifer Couzin-Frankel discusses the pros and cons of cancer clinical trials, challenging the benefits. Lukas Vogelsang explores color vision in late-sighted kids. Claire Horn talks about growing babies without a womb in her book 'Eve: The Disobedient Future of Birth'.

Join journalist Jennifer Couzin-Frankel as she uncovers fascinating health insights. Discover why elite athletes might face unexpected heart issues like atrial fibrillation and how intense training can actually complicate heart health. Delve into the potential of oxytocin nasal sprays to combat loneliness, highlighting findings on social interactions. Plus, learn about alarming nail conditions that may signal genetic disorders linked to cancer risk, showcasing the surprising connection between fingernails and health.