Stacey, Ailie, Anu and Dr Shane discuss the link between Alzheimer’s and gut microbiome. Mars missions and the history of weather forecasting. Dr Tas van Ommen talks to the team about Antarctica’s ice, atmosphere and surrounding ocean and their role in the earth’s climate system. February 28 is Rare Diseases Day. Sue White, Deputy Clinical Director of the Victorian Clinical Genetics Services introduces Rare Diseases Now (RDNow), an exciting new program at the Royal Children’s Hospital, initiated to deliver genomic diagnoses and precise, personalised care to families affected by a rare disease.