The Alien on Earth: Why It Has 9 Brains 🐙 #Octopus #MarineBiology #OceanLife #Aliens #ScienceFacts The Octopus is a biological anomaly. In this episode of Uncovered Layers, we dissect the engineering of the most intelligent invertebrate on Earth: ​The Circulatory System: Why it needs three hearts and copper-based blue blood to survive. ​The Decentralized Mind: How it operates with nine brains—one central processor and eight independent neural clusters in its arms. ​Optical Engineering: How Chro

Ever seen those weird green “alien brains” scattered around the ground this time of year? These strange fruits may catch our eye, whether it’s the color, texture, or nuisance they create, but it was the usefulness of the tree that caught Meriwether Lewis’ attention right here in St. Louis over 200 years ago. What do you call these fruits? | via Brooke Butler for Living St. Louis | Nine PBS

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