Useful links

Calculate your carbon footprint:

https://www.nature.org/greenliving/carboncalculator/index.htm

http://footprint.wwf.org.uk/

World Population live count:

https://www.livepopulation.com/

Calculate your plastic pollution footprint:

https://www.earthday.org/plastic-calculator/

Calendar of the UN “International Days”:

http://www.un.org/en/sections/observances/international-days/