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The 2023 state of the climate report: Entering uncharted territory

Climate change

The 2023 state of the climate report: Entering uncharted territory

William J. Ripple et al. 
24 October 2023


The Alliance of World Scientists that issues Scientists' Warnings has just published its 2023 state of the climate report. The following is a summary of the conclusions of the report. You should refer to the full report for more details, references and telling graphics.

The effects of global warming are progressively more severe, and possibilities such as a worldwide societal breakdown are feasible and dangerously underexplored. By the end of this century, an estimated 3 to 6 billion individuals—approximately one-third to one-half of the global population—might find themselves confined beyond the livable region, encountering severe heat, limited food availability, and elevated mortality rates because of the effects of climate change. Big problems need big solutions. Therefore, we must shift our perspective on the climate emergency from being just an isolated environmental issue to a systemic, existential threat. Although global heating is devastating, it represents only one aspect of the escalating and interconnected environmental crisis that we are facing (e.g., biodiversity loss, fresh water scarcity, pandemics). We need policies that target the underlying issues of ecological overshoot where the human demand on Earth's resources results in overexploitation of our planet and biodiversity decline. As long as humanity continues to exert extreme pressure on the Earth, any attempted climate-only solutions will only redistribute this pressure.

The overexploitation of our planet shows that endless growth and overconsumption by rich countries and individuals is unsustainable and unjust. We advocate for reducing resource overconsumption; reducing, reusing, and recycling waste in a more circular economy; and prioritizing human flourishing and sustainability. We emphasize climate justice and fair distribution of the costs and benefits of climate action, particularly for vulnerable communities. We call for a transformation of the global economy to prioritize human well-being and to provide for a more equitable distribution of resources. We also call to stabilize and gradually decrease the human population with gender justice through voluntary family planning and by supporting women's and girls’ education and rights, which reduces fertility rates and raises the standard of living. These environmentally conscious and socially equitable strategies necessitate far-reaching and holistic transformations in the long run that could be achieved through gradual but significant steps in the short term.

As scientists, we are increasingly being asked to tell the public the truth about the crises we face in simple and direct terms. The truth is that we are shocked by the ferocity of the extreme weather events in 2023. We are afraid of the uncharted territory that we have now entered. Conditions are going to get very distressing and potentially unmanageable for large regions of the world, with the 2.6°C warming expected over the course of the century, even if the self-proposed national emissions reduction commitments of the Paris Agreement are met. We warn of potential collapse of natural and socioeconomic systems in such a world where we will face unbearable heat, frequent extreme weather events, food and fresh water shortages, rising seas, more emerging diseases, and increased social unrest and geopolitical conflict. Massive suffering due to climate change is already here, and we have now exceeded many safe and just Earth system boundaries, imperiling stability and life-support systems. As we will soon bear witness to failing to meet the Paris agreement's aspirational 1.5°C goal, the significance of immediately curbing fossil fuel use and preventing every further 0.1°C increase in future global heating cannot be overstated. Rather than focusing only on carbon reduction and climate change, addressing the underlying issue of ecological overshoot will give us our best shot at surviving these challenges in the long run. This is our moment to make a profound difference for all life on Earth, and we must embrace it with unwavering courage and determination to create a legacy of change that will stand the test of time.


SOURCE: based on https://academic.oup.com/bioscience/advance-article/doi/10.1093/biosci/…


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Last updated 27 October 2023

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