David Buchs: How did the formation of the Isthmus of Panama help shape the modern Earth?
Trallwn Community Hub, Bethel Rd, Llansamlet, Swansea SA7 9QP Trallwn Community Hub, Bethel Rd, Llansamlet, SwanseaSee Newsletter http://swga.org.uk/swga-september-newsletter-2025 for details of all our events Panama Isthmus map courtest of https://earthobservatory.nasa.gov/image-use-policy