NEWS
China plans to build forest cities to tackle air pollution: http://www.bbc.co.uk/news/av/world-asia-40498186/china-s-forest-city
Boyan Slat, a young entrepreneur, tries to clean up the oceans of plastic waste: https://www.theoceancleanup.com/
The last northern white rhino: http://www.bbc.co.uk/news/world-africa-39713327
Hans Rosling dies: http://www.bbc.co.uk/news/world-europe-38900572
Vegetable crisis hits supermarkets: http://www.bbc.co.uk/news/uk-38851097