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.
Luckily, governments are acting and our cities are about to look a whole lot greener.
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