Liz Bonnin discusses the potential of micro nuclear reactors for achieving net zero emissions by 2050. The evolution of eggs in the animal kingdom and public perception of micro nuclear reactors are explored. Dr. Alexandra Freeman's appointment to the House of Lords and the importance of evidence communication are highlighted.

Science presenter Liz Bonnin and science journalist Ginny Smith discuss the mystery of why we need to sleep, challenging existing theories. Professor Andrea Sella reveals the properties of the rare element promethium. Professor Liana Zanette explains how animals fear human voices more than other predators. Expert Megan Rossi tackles a listener question on gut bacteria diversity in well-traveled individuals.