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At the start of this year, scientists confirmed our planet is continuing to change, reporting its highest temperature on record in 2016 - it is the first time temperatures have broken the previous high three years in a row.
In addition, massive population densities in our world’s cities mean nine out of 10 people on our planet now live where air pollution exceeds World Health Organisation safety limits.
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Luckily, governments are acting and our cities are about to look a whole lot greener.
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