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Who is the Healthy Planet Action Coalition?


Founded in 2021, the Healthy Planet Action Coalition (HPAC) is an international group of over 200 scientists, engineers, and policy and advocacy specialists urging emergency action to restore a safe climate.

Current global climate policy of further warming to 1.5 degrees C above normal cannot stop Earth systems degradation in progress and as a result, tipping responses will create natural feedback emissions that dwarf humankind’s. The 1.5 degree C above normal warming target does not reduce climate change effects, it increases them and like all warming effects, further warming increases almost all effects nonlinearly. HPAC advocates for the only thing that can create a safe climate – restoration. Our current 1.5 C warming target is further warming and definitively not restoration. 

We advocate the world’s communities come together to carry out an equitable, science-based plan of action to restore our climate back to within its former natural variation where our Earth systems evolved, and to trust our engineers in implementing actions that that cool our climate from today, back to within those natural boundaries, with temporary emergency cooling strategies, and removal of atmospheric greenhouse gases that are responsible for the ongoing mayhem and degradation of Earth systems, that directly leads to collapse and tipping responses, so that we have time to  decarbonization of our global culture to create a sustainable future. 

The goal of these actions, along with enhanced and transformative adaptation and regeneration measures, is to restore Earth’s climate back to within the evolutionary boundaries of our Earth systems at well below 1 degree C above normal by mid-century, that will stabilize active tipping collapse responses of key ecosystems, return the unprecedented weather extremes to their normal rare occurrences, and eliminate warming-caused injustice and inequity, so as to ensure a livable planet for humanity and the natural world.

(See more details below in the executive summary of our Strategic Narrative)

HEALTHY PLANET ACTION COALITION

Mission Statement

We advocate the world community urgently come together to carry out an equitable, science-based plan of action that includes what HPAC calls, the Climate Triad:

  • directly cooling the climate through sunshine reflection, ecosystem restoration, and other safe and effective means,
  • deploying large scale removal of atmosphere carbon dioxide and other greenhouse gasses, and
  • accelerating emission reductions

The goal of these actions, along with enhanced and transformative adaptation and regeneration measures, is to reduce the average global temperature increase to well below 1°C in the coming decades. Doing so will sharply reduce weather extremes, slow or stop the collapse of key ecosystems, and help ensure a livable planet for humanity and the natural world.

Executive Summary, Healthy Planet Action Coalition Strategic Narrative

Modified from the original Executive Summary, HPAC Strategic Plan, March 23, 2025

In 2024, Earth’s temperature suddenly jumped above the dangerous 1.5 degree C (2.7 F) warming above normal “Paris target”, and many now project warming to breach 2 C by 2040 to 2045. The frequency of extreme weather events and impacts are accelerating even faster. There has been repeated recent publishing in peer review journals on the activation of warming-caused degradation of Earth systems (different forest systems across the world, ocean currents, ice sheets, permafrost, corals, and other ocean processes, etc.) is mounting evidence that catastrophic, largely irreversible Earth systems collapses (known as tipping elements) will be the result if we do not lower our climate’s temperature back to within the evolutionary boundaries of our Earth systems before they become so degraded they cannot be restored. This threshold temperature  of the maximum warmth of our old climate is below 1 degree C (1.8 F) warming above normal and 350 ppm CO2 in our atmosphere. The time frame or point of no return for this climate restoration is cited as about “mid-century” where, if we do not have our Earth cooled back to within the evolutionary boundaries of our systems by then, natural feedback emissions from foregone systems collapses will dwarf humankind’s.

In 2024, Earth’s temperature suddenly jumped above the dangerous 1.5 degree C (2.7 F) warming above normal “Paris target”, and many now project warming to breach 2 C by 2040 to 2045. The frequency of extreme weather events and impacts are accelerating even faster. There has been repeated recent publishing in peer review journals on the activation of warming-caused degradation of Earth systems (different forest systems across the world, ocean currents, ice sheets, permafrost, corals, and other ocean processes, etc.) is mounting evidence that catastrophic, largely irreversible Earth systems collapses (known as tipping elements) will be the result if we do not lower our climate’s temperature back to within the evolutionary boundaries of our Earth systems before they become so degraded they cannot be restored. This threshold temperature  of the maximum warmth of our old climate is below 1 degree C (1.8 F) warming above normal and 350 ppm CO2 in our atmosphere. The time frame or point of no return for this climate restoration is cited as about “mid-century” where, if we do not have our Earth cooled back to within the evolutionary boundaries of our systems by then, natural feedback emissions from foregone systems collapses will dwarf humankind’s.

It is fundamentally import to understand that once system degradation begins, it does not stop unless the thing that caused it to begin is removed. This means that even if we magically halted all warming this instant, ongoing systems collapses will complete with untenable natural feedback emissions. These natural feedback emissions will create effects that, like their quantity, will dwarf current projections of effects from warming because these projections do not include systems collapse responses. This means future effects from collapsing Earth systems will dwarf those suggested by climate science literature in a world hotter than 2 or 3 degrees C warming above normal.

The Healthy Planet Action Coalition (HPAC) was formed in 2021, to advocate for implementing worst-case, end of century cooling strategies immediately, with emergency urgency because, projections of activation of tipping collapses of our current climate culture of the later part or end of this century have now been significantly overwhelmed.  This is a new reality that our slow and understated climate culture and climate science consensus organization that we all depend upon for the best climate information; cannot yet communicate because this culture is slower than the speed of our accelerating climate change.

The cure is no longer limiting warming to 1.5 C, and certainly not at 2100. The challenge now is to cool Earth back to within the evolutionary boundaries of her systems by mid-century so these systems have a chance at self restoration to prevent untenable effects from natural feedback emissions. to do this we must do everything we known how to do, all at the same time, with emergency urgency: accelerate emission reductions, implement large-scale greenhouse gas removals, and direct cool through sunshine reflection. This blended three-point strategy is called the Climate Triad. It should be accompanied by aggressive and transformative adaptation to the accelerating damages that are happening now and that are anticipated in the very near future.

HPAC focuses on advocacy of the safest and most effective deployment of direct climate cooling. Others focus on emissions reductions, net zero, and decarbonization, and on carbon dioxide removal in many of its varied forms. We advocate that a mission-driven approach to research and deployment be led directly led by governments or through newly created or existing international agencies. The initial challenges to, and opportunities for, the achievement of the mission have been documented in an HPAC SWAT analysis. LINK LINK LINK LINK LINK LINK

Tackling dangerous climate change requires a good understanding of the current uncertainty and evolving context of economic, technological, institutional and political settings. this is why we have assembled  a team of over 200 scientists, engineers, and advocacy and policy experts to guide this vision of emergency climate restoration.  In an international policy context, HPAC encourages the adoption of a Belem Climate Accord by Heads of State at COP30 in 2025 , that can restores a safe and healthy climate in before mid-century.

With this sound and bold HPAC approach to avoiding unimaginable levels of climate change induced suffering, death, and destruction, and the possible collapse of civilization, we present here our strategy: It includes the long-term framework for action to reduce global warming to less than 1 degree C above normal  and no more than 350 ppm CO2 in our atmosphere in the coming decades.

The purposes of our strategy is: Developing the most effective and realistic directions to align HPAC members; documenting how we will accomplish our immediate agendas during the coming three years and the long term goals in coming decades; guiding the direct HPAC activities; and enabling the preparation of annual work plans and subsidiary briefs and brochures for communication with the public, partners and potential philanthropists. As with any strategy, it should be reviewed periodically and revised as appropriate.

HPAC Strategic Plan LINK LINK LINK LINK LINK LINK