‘Plate tectonics’ describes fragments of the Earth’s outer shell that move against, over, and under one another at their boundaries, slowly changing the shape and location of our continents and oceans. The theory revolutionised the Earth sciences field by providing an understanding of how mountains are built, volcanoes erupt, and earthquakes are triggered. But while the theory is now a given, this hard-won scientific consensus represents an historic moment in living memory.

The latest edition of the Proceedings of the Royal Society of Victoria is now online, featuring a new species of calcareous sponge discovered in Geelong, a spectacular new H5 meteorite in Maryborough, an account of Indigenous meteorological knowledge using stellar scintillation, a reclassification of fossil graptolites from the early Bendigonian, a case for regulated investment in a resilient electricity network, an account of the Bureau of Meteorology’s new extreme heatwave event forecasting service, and a discussion on whether a similar service might be required for cold extremes.