What if your immune system started attacking you, instead of protecting you? The Associated Press is looking at autoimmune diseases, the immune system's dark side. | AP

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sigma_ceartor on Instagram: "🇯🇵 Japan is turning footsteps into electricity! ⚡ Using piezoelectric tiles, every step you take generates a small amount of energy. Millions of steps together can power LED lights and displays in busy places like Shibuya Station. A brilliant way to create a sustainable and smart city — turning movement into clean, renewable energy 🌱💡 #JapanInnovation #Piezoelectric #FutureTech #GreenEnergy #RenewableEnergy #CleanEnergy #SustainableFuture #SmartCity #TechForGood