Overshoot and the Cryosphere: Averting Global Meltdown by ICCI, Climate Analytics, Guardian News, agencies   2 Nov. 2026   Overshoot and the Cryosphere: Averting Global Meltdown - International Cryosphere Climate Initiative   Exceeding the 1.5°C Paris Agreement target will bring large and in many cases irreversible impacts from the Earth’s melting ice sheets, permafrost, glaciers, sea ice and polar oceans. These losses can still be limited if overshoot is kept to a minimum by deep emissions reductions followed by scaled-up carbon drawdown.   Overshoot and the Cryosphere: Averting Global Meltdown sets out the global impacts of ice loss with overshoot, exploring which ones are locked in – and how more urgent climate action can still stop or slow the worst of this damage, delivering vital evidence ahead of COP31 in Turkiye: http://iccinet.org/overshoot/   Nov. 2026   Cryosphere faces permanent damage when world overshoots 1.5C, scientists warn. (Guardian News, agencies)   Earth’s icy regions face such dangerous melting that global heating should be brought back below 1C after an inevitable period of overshooting global temperature targets, a UN report has found.   Permanent and widespread losses of snow and ice expose a “persistent myth” that overshooting the 1.5C target of the Paris climate agreement – to 2C or 3C – could be manageable or even preferable to urgent cuts to emissions, the report found.   The planet has heated by at least 1.3C since pre-industrial times and failures to curb greenhouse gas emissions and protect nature have led scientists to conclude that some level of overshoot is inevitable as they fight to keep end-of-century warming to 1.5C.   But extreme effects on the cryosphere – Earth’s water in a solid state, including all its ice and snow – mean temperatures must rise above that threshold for as short a period as possible, the scientists urged. Added to this, enough planet-heating carbon should be removed from the atmosphere through nature based processes to bring long-term warming down much further, ideally below 1C by 2150.   The high overshoot expected under current policies – with peak temperatures of about 3C – would thaw nearly all near-surface permafrost, make “severe and possibly abrupt” disruption to ocean circulation likely, and lead to widespread acidification, the report found. The latest scientific research suggests sea ice recovers more slowly than previously thought.   The report, written by 80 scientists brought together by the International Cryosphere Climate Initiative (ICCI) and the UN Environment Programme (UNEP), found much of the damage would be permanent even if global temperatures were brought back down to 1.5C, such as glacier melt raising sea levels and threatening water security.   James Kirkham, a glaciologist at ICCI and the lead author of the report, said the cryosphere is “one of the most sensitive components of the climate system”, and the consequences of its loss affect the whole planet.   “This year, we’ve already seen one of the largest and most deadly ice rock avalanches ever recorded, on the Nepal-China border – it killed thousands of people and left damage equivalent to 10% of Nepal’s GDP in a single event,” said Kirkham. “Switzerland has lost 20% of its glacier ice in the last five years, and thousands of glaciers worldwide are expected to become extinct in the coming decade, every single year.”   The report, which comes as world leaders and diplomats converge on Turkey for the 31st annual Cop climate conference, documented rapid and accelerating melting of the cryosphere and polar oceans, with damages that range from the loss of the Greenland and Antarctic ice sheets, driving sea level rises that threaten hundreds of millions of people, to thawing permafrost, which releases more planet-heating gas.   Glaciers, which are still responding to historical warming, would only preserve about 70% of their current volume over a timescale of centuries if long-term heating were brought back down to 0.8C, the report found.   Meanwhile, the ice sheets covering Greenland and Antarctica, which are melting about six times faster today than in the 1990s, would continue to lose ice even in scenarios where overshoot is brief and temperature rise returns to 1.5C, the report found.   The scientists said a safe, long-term temperature limit for polar ice sheets lies much closer to 1.0C of global heating, and possibly even lower.   “Snow and ice respond rapidly to every fraction of a degree of warming,” said Kirkham. “But most of these systems will take centuries or millennia to recover after overshoot, especially if tipping points are crossed that cause changes to become essentially irreversible.”   Last month, a UNEP report found the world must cut emissions by 18% by 2030 and by 45% by 2035 to have a good chance of keeping temperatures from rising 1.7C above pre-industrial levels. It found there were “no good outcomes” of remaining above 1.5C.   The cryosphere report found that current policies, which will result in 2.8C of global heating, would reduce the mass of glacier ice to below 10% in the Rockies, Alps, Iceland and Scandinavia. If warming was limited to 1.5C, about 20-35% of the mass would remain.   In the Hindu Kush Himalayas, where glaciers are a source of water for nearly a quarter of humanity, current policies will leave just 41% of the ice mass. If warming was limited to 1.5C, 83% would remain.   Bill Hare, a climate scientist and the CEO of Climate Analytics, a policy institute, who was not involved in the report, said: “Ice sheets melting six times faster than 30 years ago, sea ice and mountain glaciers disappearing at record speed, sea levels inexorably rising, the life-giving polar oceans acidifying: all irreversible now on human timescales, all laden with worldwide consequences, and all taking climate impacts past limits of adaptability.”   He added: “Every government minister and every fossil fuel executive who’s ever succeeded in watering down climate action can look at this report and see how their actions have fundamentally damaged the world we live in.”   http://www.theguardian.com/science/2026/nov/02/permanent-damage-crysophere-overshoots-15c-scientists-warn http://climateanalytics.org/press-releases/cryosphere-reports-highlight-irreversible-damage-of-fossil-fuels http://iccinet.org/overshoot/ http://climateanalytics.org/press-releases/comment-unep-gap-report-shows-urgency-of-fossil-fuel-phase-out-as-climate-overshoot-looms http://www.nature.com/articles/s41893-023-01132-6 http://theelders.org/news/climate-crisis-will-not-wait-world-s-geopolitics-improve Visit the related web page
	Everyone, everywhere must enjoy the human right to a clean, healthy and sustainable environment by UN Human Rights experts, Special Rapporteurs   Oct. 2026   Commemorating five years since the UN Human Rights Council expressly recognised that everyone, everywhere must enjoy the human right to a clean, healthy and sustainable environment, States, international entities and businesses must prioritise its implementation.   Implementing the human right to a clean, healthy and sustainable environment is an urgent priority, especially in light of the increasingly severe human rights impacts of climate change, biodiversity loss and toxic pollution.   As UN human rights experts, we urge all States, international entities and businesses to demonstrate leadership and advance practical solutions on the ground to address the triple planetary crisis, mainstreaming this right, instead of increasing resistance to its implementation.   Today, the universal recognition of this right is further reinforced by the legal certainty provided by international law. Effective implementation is therefore essential to ensure the protection and realization of all other human rights and must be achieved without further delay.   On 8 October 2021, the UN Human Rights Council expressly recognised in Resolution 48/13, the right to a clean, healthy and sustainable environment as a human right. This historic resolution opened the way for the General Assembly to, accordingly, recognise the right in July 2022. However, recognition alone is not enough. The right must be translated from principle into practice, particularly for marginalised individuals and groups who are suffering the most from the negative impacts of environmental degradation and climate change, including women who experience particular and disproportionate effects of these crises, and should be integrated in all tiers of education.   As we mark the historic recognition of the human right to a clean, healthy and sustainable environment for everyone, everywhere, we stress the interdependence of this with all other rights, and how essential it is to advancing peace and sustainable development.   Human rights are universal, indivisible and interdependent, and, as unanimously reaffirmed in the Universal Declaration of Human Rights, and more recently, in the Advisory Opinion of the International Court of Justice, a healthy environment is essential to and a precondition for the enjoyment of all other human rights.   The recognition of the right to a clean, healthy and sustainable environment as a human right marks a milestone achieved through the collective efforts and collaboration of many actors from around the world.   This historic recognition was supported by States –with a vast majority voting in favour and none voting against these resolutions. It was achieved after five decades of efforts from Indigenous Peoples, human rights defenders, social movements, people of African descent, peasants and campesinos, civil society organizations, United Nations entities, Special Procedures and many others.   It therefore stands as a testament to what international cooperation and participatory processes can achieve for the benefit of present and future generations.   The right to a clean, healthy and sustainable environment includes clean air, a safe climate, safe and sustainably produced food, safe and sufficient water, healthy biodiversity and ecosystems, and non-toxic environments.   Industrial food systems impact healthy ecosystems and biodiversity and other elements of the right, therefore, agroecological transformation pathways of industrial food systems must be advanced to safeguard ecosystems and food for future generations.   A healthy environment also includes access to information, meaningful public participation and access to justice and effective remedies.   The recognition of this right by the UN Human Rights Council, followed by the UN General Assembly, inspired an increasing number of States to recognise it in their constitutions or legislation. To date 166 have done so.   The African and the Inter-American human rights systems were the first to recognise this right. It is also included in the Arab Charter of Human Rights and by the Association of Southeast Asian Nations (ASEAN), which recently adopted a declaration on the right to safe, clean, healthy and sustainable environment, with a regional action plan currently under development. The Council of Europe has been discussing this recognition for several years, and UN human rights experts have urged member States to begin negotiations on a legally binding instrument recognising the right to a healthy environment.   The legal recognition is strengthened by recent advisory opinions from the International Court of Justice and the Inter-American Court on Human Rights, which confirm that a healthy environment is both a human right, and essential to advancing urgent and systemic transformative changes needed to achieve a healthy planet to all.   We also emphasise the importance and the obligation of States to effectively protect environmental human rights defenders, civil society organizations and movements, including women human rights defenders, independent media and those working to protect the environment, the climate system, lands, the ocean and their territories.   Implementing the right to a healthy environment also requires ensuring that they are highly supported, recognised, and protected, reflecting the crucial importance of their work for all communities, societies and the planet.   Instead, today they increasingly face serious threats attacks and even enforced disapperances and killings, as well as shrinking civic spaces in which to carry out their work.   We note with concern that the recognition of the right to a healthy environment contrasts with the worrying situation faced by environmental human rights defenders, particularly women and girls, Indigenous Peoples, people of African descent, campesinos and peasants, and fisherfolk, independent environmental scientists, independent media, and civil society organizations and movements.   We therefore reaffirm the obligation of States and the responsibility of international entities and business to respect this right and to guarantee a safe space for those who work to defend it.   States must also investigate all enforced disapperances and killings of environmental human rights defenders in line with international standards including the Minnesota Protocol on the investigation of potentially unlawful death (2016) with a view to ensuring truth, justice, accountability, preventing impunity and drawing lessons to avoid repeated violations.   We welcome the positive inclusion of the right to a healthy environment in multilateral decisions, such as the Kunming-Montreal Global Biodiversity Framework, and emphasize the importance of continuing with this inclusion and implementation. We stress that States, businesses and international entities must work in a coordinated manner to ensure its effective implementation.   We are also concerned by legislative and policy setbacks as well as the increasing prevalence of war, conflict, occupation and genocide, all of which have direct and profound impacts on the right to a healthy environment. A healthy environment both catalyzes and sustains a healthy and peaceful planet.   Thus, rather than pursuing deregulation, and escalating conflicts, militarization and financing of war, efforts should be shifted towards strengthening the rule of law and increasing investment in environmental protection, climate action, and ecosystem restoration, in accordance with international law obligations.   Recent challenges to explicitly include the right to a healthy environment in international negotiations and agreements underscore the need to renew the collaboration and commitment in advancing this right.   It is vital that States and businesses, as well as all international entities, mainstream the right to a healthy environment; as happened when the recognition of the right was achieved, by closely collaborating for its implementation.   We stress that the inclusion of the right to a healthy environment and a human rights-based approach is fundamental to addressing root causes, preventing and solving the serious impacts of the planetary crises of climate change, biodiversity loss and toxic pollution, with their severe environmental, economic, social, cultural and developmental consequences.   We reiterate that the right to a clean, healthy and sustainable environment is essential for the enjoyment of all human rights and that those in the most marginalised and discriminatory situations are suffering the most from the negative impacts of the triple planetary crisis.   We therefore highlight the importance of ensuring that all actions and initiatives prioritise addressing these impacts and developing intersectional solutions, informed by science as well as by good practices– including Indigenous knowledge, local knowledge, and the meaningful participation of children, youth, women and persons with disabilities–and supported with adequate budgets so that measures are implemented as a matter of priority to support and benefit, in particular, those who have contributed the least to these crises yet suffer the most from their impact.   http://www.ohchr.org/en/statements-and-speeches/2026/10/five-years-recognition-right-healthy-environment-un-experts-urge http://www.ohchr.org/en/press-releases/2026/10/justice-systems-front-line-climate-crisis-must-be-fit-purpose-un-expert http://www.ohchr.org/en/press-releases/2026/10/people-and-planet-centred-planning-essential-address-global-existential http://www.ohchr.org/en/press-releases/2026/10/international-carbon-credits-should-not-benefit-climate-harming-actors-un http://www.ohchr.org/en/press-releases/2026/10/un-expert-warns-toxic-pollution-remains-one-greatest-human-rights-challenges http://www.ohchr.org/en/press-releases/2025/07/un-experts-welcome-recognition-international-court-justice-all-states-must
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