Proposed international legal instrument — under developmentNot yet ratified or in force
Please support The Convention on Planetary Hydrological Security and Cryosphere Stability
A proposed international legal instrument

The cryosphere is the largest reservoir of freshwater on Earth—and it has no dedicated international law. We are changing that.

The CPHSCS proposes a dedicated framework linking cryosphere stability, planetary hydrological security, scientific cooperation, land restoration, monitoring, and international action.

Restoring Land. Restoring Hope. By Restoring Water.
CPHSCS logo
Status: CPHSCS is a proposal under development. It is not yet a treaty, has no binding force, and does not represent a position of the United Nations or any government unless expressly stated by the relevant institution.

A governance proposal for a connected Earth system

WMO describes the cryosphere as including snow, glaciers, ice sheets, ice shelves, icebergs, sea ice, lake ice, river ice, permafrost and seasonally frozen ground. Approximately 70% of Earth's freshwater exists as snow or ice.

~70%of Earth's freshwater is stored as snow or ice
2025–2034UN Decade of Action for Cryospheric Sciences
39proposed draft Articles
14proposed Annexes

Three pillars

The site organizes the proposal around a legal framework, a practical implementation programme, and a transboundary demonstration concept.

01 · The Convention

CPHSCS

A proposed international legal and governance framework addressing planetary hydrological security and cryosphere stability.

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02 · Implementation

0.01% Solutions

A proposed measurable, decentralized approach to retaining a small fraction of annual precipitation through distributed water-retention systems.

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03 · Demonstration

Green Web

A proposed transboundary corridor for rainfall retention, land restoration, hydrological resilience, ecological connectivity and scientific learning.

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Global community poll

What should be the first priority of a future global framework for cryosphere stability and planetary hydrological security?

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Latest updates

News items should be published only after verification and source attribution.

Aug 2026
UNCCD COP17
UNCCD COP17 was held in Ulaanbaatar, Mongolia, from 17–28 August 2026. Official documentation includes the Ulaanbaatar Declaration of the seventeenth session, “Restoring Land, Restoring Hope.”
2025
UNEA-7
UNEA-7 adopted Resolution 10 on preservation of glaciers and the broader cryosphere, particularly in mountain regions.
2024
UN General Assembly
Resolution 78/321 established the Decade of Action for Cryospheric Sciences, 2025–2034.