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When Arachnids Ruled Earth

When Earth Was Ruled by Arachnids | Calming Deep-Time Documentary Drift back hundreds of millions of years to the forgotten age before dinosaurs, when arachnids and their relatives shaped the first ecosystems on land. In this slow, soothing documentary from The Snoozy Scientist, we trace the rise of sea scorpions in Silurian seas, the cautious crawl of early scorpions onto barren shores, and the Carboniferous world of giants where arthropods reigned beneath humid forests and oxygen-rich skies. What you’ll see and learn: How eurypterids, the “sea scorpions,” dominated shallow waters and inspired the leap toward land. The biology that made land life possible: book lungs, moisture-saving exoskeletons, vibration-sensing hairs, venom, and the first silk. Daily life inside a Carboniferous jungle, featuring Pulmonoscorpius, Arthropleura, and giant dragonflies. Why arthropods could grow so large when atmospheric oxygen hovered around roughly thirty-five percent, and what happened when levels fell. The Megarachne twist: from “largest spider” to a misidentified eurypterid, and what that reveals about scientific self-correction. How amphibians and early reptiles changed the game, and why arachnids endured by diversifying into today’s spiders, scorpions, mites, and more. This video blends gentle narration with rigorous science, perfect for winding down while feeding your curiosity about evolution, paleontology, and Earth history. If you enjoy calm, cinematic science stories, please tap Like and Subscribe. Comment where you’re watching from and what time it is for you—we love seeing this sleepy corner of science span the globe.