Charles Darwin, nuclear bombers & the giant tortoise with Sarah Hamylton

In this episode of Totally Cooked: The Climate & Weather Podcast, hosts Iain Strachan and Professor Sarah Perkins-Kirkpatrick are joined by Associate Professor Sarah Hamylton (University of Wollongong) to explore the fascinating world of maps, oceans, and climate science. From the evolution of cartography to cutting-edge spatial analysis, the conversation uncovers how maps shape our understanding of the planet, and what we might be losing in the digital age. If you’re interested in geography, climate research, or the science behind how we map the Earth, this episode is packed with insight.

Drawing on Sarah Hamylton’s new book Plotting the Oceans: Stories of Powerful Maps & Their Makers, the episode journeys through remarkable stories from history and science. Discover how Charles Darwin contributed to our understanding of coral atolls during the voyage of the Beagle, and meet pioneering ocean mapper Marie Tharp, whose work helped reveal the structure of the sea floor and support the theory of continental drift. These stories highlight the powerful role of maps in advancing science and changing how we see the world.

The episode also connects past discoveries to today’s climate challenges, from coral bleaching on the Great Barrier Reef to the conservation battle over Aldabra Atoll and its giant tortoises, once nearly replaced by a controversial military base. With compelling storytelling and expert insight, this episode of Totally Cooked brings together history, climate science, and environmental change, making it essential listening for anyone interested in oceans, mapping, and the future of our planet.

Iain records Totally Cooked on the lands of the Bunurong People of the Kulin Nation. Sarah records Totally Cooked on the lands of the Ngunnawal and Ngambri people. We pay our respects to Elders past, present and emerging and recognise their unique and continuing connection to the land, skies, waters, plants and animals.

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