Earth Overshoot Day 2015 lands on August 13.
Earth Overshoot Day is the annual marker of when we begin living beyond our means in a given year. While only a rough estimate of time and resource trends, Earth Overshoot Day is as close as science can be to measuring the gap between our demand for ecological resources and services, and how much the planet can provide.
The Cost of Ecological Overspending
Throughout most of history, humanity has used nature’s resources to build cities and roads, to provide food and create products, and to absorb our carbon dioxide at a rate that was well within Earth’s budget. But in the mid-1970s, we crossed a critical threshold: Human consumption began outstripping what the planet could reproduce.
According to Global Footprint Network’s calculations, our demand for renewable ecological resources and the services they provide is now equivalent to that of more than 1.5 Earths. The data shows us on track to require the resources of two planets well before mid-century.
The fact that we are using, or “spending,” our natural capital faster than it can replenish is similar to having expenditures that continuously exceed income. In planetary terms, the costs of our ecological overspending are becoming more evident by the day. Climate change—a result of greenhouse gases being emitted faster than they can be absorbed by forests and oceans—is the most obvious and arguably pressing result. But there are others—shrinking forests, species loss, fisheries collapse, higher commodity prices and civil unrest, to name a few. The environmental and economic crises we are experiencing are symptoms of looming catastrophe. Humanity is simply using more than what the planet can provide.
Source: Global Footprint Network