There are exciting results in trials of two coronavirus vaccines. But just how excited should we be? We discuss the latest findings, the strength of these potential vaccines, and how likely it is they’ll be rolled out before the end of the year. Also on the show, the team discusses the controversial issue of overpopulation, debates which animal group was the first to evolve on Earth, examines the female-led mating habits of mongoose, and explores new possibilities for space gardening. On the pod this week are New Scientist journalists Rowan Hooper, Tiffany O’Callaghan, Graham Lawton and Richard Webb. To find out more, subscribe at newscientist.com/podcasts. Our GDPR privacy policy was updated on August 8, 2022. Visit acast.com/privacy for more information.