"We're really in the trenches every day understanding that we're in a biodiversity crisis." - Roger Bull, Canadian Museum of Nature.In our latest episode of the Greatest Classroom on Earth podcast, Geoff Green interviews Roger Bull, Head of Operations for the National Biodiversity Cryobank of Canada and the Laboratory of Molecular Biodiversity at the Canadian Museum of Nature. Recorded on board the Polar Prince as it headed up towards Northern Labrador on the Innu Nation Uinipekᵁ expedition. Roger shares his background, growing up in Halifax and Southern Alberta as the son of a Parks Canada superintendent, to his two decades as a biologist and Arctic researcher at the Canadian Museum of Nature. They delve into his extensive involvement with Students on Ice expeditions, on-board ships going back to 2014, his work with the Cryobank, the importance of biodiversity, and the challenges and hopes for conservation. The conversation highlights the significance of experiential education and engaging with Indigenous communities in Arctic research.