KWR Kees Roest by KWR Kees Roest
03 August 2019

Earth overshoot day 2019

It is the time of the year of overshoot day again. The day that humanity uses up its allowance of natural resources such as water, soil and clean air for the entire year. This year on 29th of July, the earliest ever. However, for example in The Netherlands we already had our country overshoot day this year at the 4th of May. We would need about three earths if everyone lived like the Dutch....

Country Overshoot Days 2019

A country’s overshoot day is the date on which Earth Overshoot Day would fall if all of humanity consumed like the people in this country. To calculate a country’s Overshoot Day, we use the latest data available from the National Footprint and Biocapacity Accounts. The 2019 edition features data from 2016, as data is reported to the United Nations with some time delay. Let’s take Switzerland, for example, using the latest data available (for 2016): The Ecological Footprint for Switzerland is 4.64 gha per person (in 2016) Global biocapacity is 1.63 gha per person (in 2016) Therefore, it would take (4.64/ 1.63) = 2.8 Earths if everyone lived like the Swiss, OR we can determine Switzerland’s overshoot day as 365 * (1.63/ 4.64) = 128th day in the year. The 128th day is the 9th of May, Switzerland’s Overshoot Day (in 2016). Not all countries will have an overshoot day. By way of the country overshoot equation above, a country will only have an overshoot day if their Ecological Footprint per person is greater than global biocapacity (1.63 gha). Countries whose Ecological Footprint per person are less than global biocapacity (1.63 gha) do not have an overshoot day and are therefore not included in our list below. In leap years,...

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