Sip back and discover the Archean Eon (4–2.5 billion years ago), Earth’s formative period shaping continental crust, greenstone belts, and early life. Discover anoxic atmospheres, stromatolites, cyanobacteria, and mineral-rich cratons like Pilbara and Kaapvaal. Learn how volcanic activity, hydrothermal systems, and early tectonics set the stage for Earth’s geological, atmospheric, and biological evolution in this deep-time journey.