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Science indicates that we are transgressing planetary boundaries that have kept civilization safe for the past 10,000 years. Evidence is growing that human pressures are starting to overwhelm the Earth’s buffering capacity.
Progression of the dates of Earth Overshoot Day [1] Evolution of the Earth Overshoot Day dates in time. Earth Overshoot Day (EOD) is the calculated illustrative calendar date on which humanity's resource consumption for the year exceeds Earth’s capacity to regenerate those resources that year.
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These ecological resource accounts reveal that the global community has been exceeding the regenerative capacity of the Earth since 1970, which was the year when the consumption capacity of humanity first exceeded the biocapacity the Earth. Each year since 1970 humanity has witnessed global ecological overshoot.
13 September: a study published in Science Advances indicated that six of the nine "planetary boundaries"—delimiting the "safe operating space"—had been exceeded. [56] Carbon dioxide concentration and radiative forcing were among the boundaries that had been exceeded. [56]
World leaders are meeting in Paris this month in what amounts to a last-ditch effort to avert the worst ravages of climate change. Climatologists now say that the best case scenario — assuming immediate and dramatic emissions curbs — is that planetary surface temperatures will increase by at least 2 degrees Celsius in the coming decades.
Humanity has already transgressed five of the nine planetary boundaries [29] putting the prospects of long-term, equitable human development at risk if permanently and substantially exceeded. According to critics, the exact location of six of these "planetary boundaries" are not proven but arbitrary, such as the 15% limit of earth use to ...
But to date, the best efforts can only identify loosely defined "planetary boundaries" beyond which tipping points exist but their precise locations remain elusive. There have been calls for a better way to manage the environment on a planetary scale, sometimes referred to as managing "Earth's life support system". [13]