Worry about what working at New Scientist is doing to my health. Not because of the job itself, but because our office is located in one of the many parts of London where air pollution exceeds the set limits. My colleagues and I breathe in a lot more nitrogen dioxide than is good for us, And if you live or work near to a busy road, or travel on them, you probably do too. Rich countries like the UK have made a lot of progress when it comes to air pollution. We've gotten rid of the soot from industry that plagues countries like China and India, and more insidious threats such as lead from petrol. But we do have a big problem with nitrogen dioxide from traffic fumes. London's Oxford Street has the highest recorded levels of nitrogen dioxide in the world.
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