As we continue to discover new mutant variants of the covid-19 virus, the team looks at how these will impact vaccination efforts and discuss the long-term implications of virus evolution. They also bring exciting news of a new dinosaur discovery, a sauropod that is among the biggest animals of all time. And staying with dinos, they highlight the University of Bristol’s reconstruction of dinosaur genitalia. They also discuss genome sequencing, and the massive diversity gap in the world’s DNA databases. There’s also news that questions our assumptions about why water is essential for life, as well as a story of hope in the form of President Joe Biden’s long list of climate action plans. On the pod are Rowan Hooper, Tiffany O’Callaghan, Layal Liverpool and Graham Lawton. To read more about the stories, subscribe at newscientist.com/podcasts. Our GDPR privacy policy was updated on August 8, 2022. Visit acast.com/privacy for more information.