How Things Really Work on Instagram: "A starfish eats using a unique external digestion system driven by simple mechanics. When it finds prey like a clam, it uses hundreds of tube feet to pry the shell open just enough to start feeding. Then it everts its stomach—pushing it outside its body—to begin breaking down the food externally. This method allows the starfish to digest prey it could never fit into its mouth. Once the soft tissues are liquefied, the stomach absorbs the nutrients and retract

Invention on Instagram: "The shepherds leap technique from the Canary Islands is a remarkable example of human adaptation to rugged volcanic landscapes. Known locally as salto del pastor, it was developed by herders who needed to cross steep slopes, ravines, and uneven ground while managing their livestock. The core tool is a long wooden pole fitted with a metal tip on the end, allowing the user to anchor the pole securely into the earth and guide their movement downward. The technique requires