Verein Klimaseniorinnen Schweiz and Others v Switzerland, Application no. 53600/20

The document provides a scientific and legal basis for the European Court of Human Rights to assess State due diligence regarding climate change. It emphasizes the urgency of limiting warming to 1.5°C to avoid irreversible damage and tipping points, noting that current global emissions trends are insufficient. It highlights severe health risks in Europe, including heat-related mortality, and argues that under the Paris Agreement and the UNFCCC, States have a 'best efforts' obligation to pursue the highest possible ambition in emissions reductions. ClientEarth asserts that failure to meet international climate commitments constitutes a prima facie violation of human rights obligations, and that adaptation measures cannot substitute for necessary mitigation.

• The international scientific consensus, primarily represented by the IPCC, indicates that limiting global warming to 1.5°C requires immediate and deep emissions reductions to avoid the most fragile ecosystems' irreversible loss and crises for vulnerable societies.
• There is a significant risk of 'tipping points'—critical thresholds where systems reorganize abruptly or irreversibly—which could be triggered at warming levels up to 2°C and become more probable above that level. These include ice sheet loss, changes in ocean currents, and forest dieback.
• Climate change poses an immediate and severe threat to human health globally and specifically in Europe, where extreme heat in 2022 is estimated to have caused at least 15,000 deaths.
• The document identifies 'lag' effects in both geophysical systems (such as ocean thermal expansion lasting centuries) and socio-economic systems ('techno-economic inertia'), meaning current delays in action lead to 'carbon lock-in' of carbon-intensive infrastructure.
• Under the Paris Agreement and the UNFCCC, States are obligated to produce Nationally Determined Contributions (NDCs) that reflect their 'highest possible ambition' and represent a progression beyond previous efforts.
• ClientEarth argues that a State's failure to fulfill international climate change commitments is a prima facie violation of its obligations to protect the human rights of its citizens.
• The document asserts that mitigation and adaptation are separate obligations; adaptation measures cannot replace the urgent need for emissions reductions to prevent disastrous global warming.

APA

ClientEarth (n.d.). Verein Klimaseniorinnen Schweiz and Others v Switzerland, Application no. 53600/20. https://www.clientearth.org/media/w2ol2145/blue-crane-tpi-021222-as-sent.pdf

Chicago

ClientEarth. Verein Klimaseniorinnen Schweiz and Others v Switzerland, Application no. 53600/20. n.d. https://www.clientearth.org/media/w2ol2145/blue-crane-tpi-021222-as-sent.pdf.

Wikipedia

{{cite report |author=ClientEarth |title=Verein Klimaseniorinnen Schweiz and Others v Switzerland, Application no. 53600/20 |url=https://www.clientearth.org/media/w2ol2145/blue-crane-tpi-021222-as-sent.pdf |access-date=23 October 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{clientearthndverein, author = {{ClientEarth}}, title = {{Verein Klimaseniorinnen Schweiz and Others v Switzerland, Application no. 53600/20}}, institution = {ClientEarth}, url = {https://www.clientearth.org/media/w2ol2145/blue-crane-tpi-021222-as-sent.pdf}, urldate = {2026-10-23}, note = {Indexed by Climate Insights Directory} }