Latest posts
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How Do Computers Recognise Images?
An image is a grid of numbers. Recognition works by passing that grid through layers that detect progressively more complicated patterns, from edges up to objects.
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Why Did the Bronze Age Collapse?
In a few decades around 1200 BC, the interconnected palaces of the eastern Mediterranean were destroyed and several states disappeared. Nobody agrees on a single cause, and that may be the answer.
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What Is Open Source and Why It Matters
Open source means the source code is published under a licence that lets others use, modify and share it. Most of the internet runs on software built that way, usually invisibly.
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Why Ancient Egypt Lasted So Long
Three thousand years of continuous civilisation is an outlier. Egypt had a river that made farming predictable, deserts that made invasion difficult, and an administration built to exploit both.
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How Interest Rates Affect Everyday Life
A central bank changes one rate and the effects reach mortgages, rents, jobs and prices through a chain of borrowing costs. Each step takes time, which is why the results lag the decision.
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How the Calendar Was Invented
A calendar has to reconcile three cycles that do not fit: the day, the month and the year. Every calendar in history is a different answer to that arithmetic problem.
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How Antibiotics Work and Why They Stop Working
Antibiotics target structures bacteria have and human cells do not. Resistance is what happens when a bacterial population evolves around that difference, and every course of treatment applies the pressure.
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Why the Industrial Revolution Started in Britain
Machines were not the cause. Britain had expensive labour and very cheap coal, which made replacing people with powered machinery pay in a way it did not elsewhere.