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What if doctors could read the body’s instruction manual to understand why diseases happen and how to treat them more effectively? In many ways, that is exactly what modern science is trying to do by reading and analysing DNA. DNA is the chemical code that carries the instructions for life. It is written using just four letters: A, T, G and C. Yet

You’ve probably noticed it. That little cylindrical bump on your laptop charger cable, usually near the laptop end. It looks a bit mysterious and suspiciously like it should have a more exciting purpose than just sitting there. So what is it? First, let’s debunk a common myth. No, it’s not a battery. It doesn’t store power or make your laptop charge