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Why Do Our Cells Age If Every Copy Is Supposed To Be Perfect? 🧠⏳ Every time your cells divide, they make a copy — almost flawless. So why do we still age? Why do perfect copies break down? 🤔 Neil deGrasse Tyson explains one of biology’s deepest mysteries: The secret lies in telomeres — the tiny timekeepers at the ends of your DNA that shorten every time a cell replicates. When they wear out… so do we. 🧬 It’s not just science — it’s the story of life’s built-in countdown. ⏳✨ #Science #Biology