This year’s theme, “Geodiversity On Our Doorstep”, is an invitation to discover the geology all around us — from garden pebbles and local streams to fossils hidden in building stones! People across the world are celebrating with walks, exhibitions and activities, and you can join in too. Try our doorstep geology challenge, head out on a pavement safari or uncover the Earth materials hiding in your home. Discover this year’s theme and explore our activities for...