Counting on …. Day 93

25th April 2024

Earth Overshoot Day is the day on which our global ecological footprint exceeds the earth’s bio capacity. (This year’s date has yet to be announced).

“Humanity is living beyond its means, which results in an environmental dilemma – because it is living at the expense of the Earth. Every year, the consumption of resources outstrips the natural regenerative capacity of our planet.” (1) So reports myclimate.org 

The day on which we have consumers one year’s worth of resources and tip into the red, is known as as Earth Overshoot Day. Last year, 2023, it fell on 2nd August, which means that in the whole of that  year we consumed resources that were equivalent to 1.7 earths! Clear this is cannot be sustainable on an ongoing basis. 

To create a sustainable lifestyle that safeguards our future, we need to address three key things: 

“Efficiency: better usage of resources so that goods are produced with less energy and resources.

Consistency: linear production replaced by the circular economy, which minimises waste. Renewable energy is key here.

Sufficiency: A sustainable change in lifestyle under which the economy is geared to moderate consumption of resources rather than constant growth. The goal is to fulfil the wishes and requirements of our society without disproportionate waste or consumption.” (1)  

For further information – 

https://overshoot.footprintnetwork.org/about-earth-overshoot-day

(1) https://www.myclimate.org/en/information/faq/faq-detail/earth-overshoot-day-how-do-we-handle-our-resources/

Counting on … day 92

24th April 2024

Ecological footprints are a measure of how much of the earth’s natural resources needed to sustain human life – ie how much clean water, clean air, soil for growing crops, oceans for fish, trees for timber, water/ wind/ fossil fuels etc for energy, land for buildings, etc needed for each human. This footprint will vary from person to person depending on their lifestyles – how much and what they consume, and how much and what sort of waste they produce. 

The ecological footprint of someone who lives off the grid, growing their own food and recycling their waste, will have a smaller ecological footprint than someone who owns multiple homes, flies and drives a large SUV, eats a meat rich diet, and buys lots of clothes and other consumer goods.

Ecological footprints are also measured in terms of global hectares per capita (see yesterday’s blog).

Using information from https://worldpopulationreview.com/country-rankings/ecological-footprint-by-country, 

USA – 8.04 gha

Australia – 7.77 

Oman – 7.29 

France – 4.6

UK – 4.20

China – 3.71

Brazil – 2.81

India – 1.19

Zimbabwe – 1.03

Democratic Republic of Congo – 0.01

You might like to use an online calculator to estimate your carbon footprint (these can be very rough and ready rather than precise but give a ballpark idea). These calculators are not just measuring your carbon footprint but your ecological footprint – how much of the earth’s resources your lifestyles uses.

https://www.footprintcalculator.org/home

https://footprint.wwf.org.uk

Counting on … day 91

23rd April 2024

Bio capacity is a measure of the ability of an ecosystem to support human life (a somewhat biased use of the term bio meaning life!) It measures the amount of food, fuel, water etc that the area of land can produce to support human life and the amount of waste  – sewage, pollution etc – that it can safely absorb. 

It reflects the regenerative capacity of ecosystem – how quickly, and by how much, can renewable resources be replaced. How quickly can crops be harvested and regrown to provide food? How quickly can trees be felled and regrown to provide timber? How quickly can fish stocks be replenished after the fish have been caught and eaten? How quickly can sewage be treated and returned into the system as drinking water? How much pollution can the air absorb before it becomes harmful to human life?

Bio capacity is measured in global hectares (gha) – ie land area per person. The global hectare is a land area that averages out land across the globe taking into account land that is more productive and land that is less productive. It measures how many hectares are needed to support one person.