Pollution
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Environmental lawyers who have defeated ministers twice return to court in a bid to remove ‘major flaws’ from air quality plans
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Exclusive: ice cores and records from the Black Death show lead entered the air from human activity – and scientists claim “natural background” levels are zero
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Leading economists, including Joseph Stiglitz and Nicholas Stern say taxes of $100 per metric tonne could be needed by 2030
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After objections from Germany draft rules would give European commission more powers to monitor testing and fine firms
Air pollution fears see demand for diesel cars fall by fifth