For millennia lead has held a deep attraction for painters, builders, chemists and winemakers - but it's done untold harm, especially to children. And while it's no longer found in petrol, you've still got several kilograms of it in your car.
The oldest pure lead, found in Turkey, was made by early smelters more than 8,000 years ago. But lead is also toxic. And so history is littered with examples of horrendous consequences for the health of people.
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