In a bid to reduce CO2 emissions in the 90s,Europe backed a major switch from petrol to diesel cars but the result was a rise in deadly air pollutionVolkswagen’s rigging of emissions tests for diesel cars comes after nearly 20 years of the technology being incentivised in Europe in the knowledge that its adoption would reduce global warming emissions but lead to thousands of additional deaths from increased levels of toxic gases.Diesel was a niche market in Europe until the mid-1990s, making up less than 10% of the car fleet. Diesels produce 15% less CO2 than petrol, and but emit four times more nitrogen dioxide pollution (NO2) and 22 times more particulates - the tiny particles that penetrate the lungs,brain and heart.
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Source: theguardian.com