2.8Highest
1.4Mean
0.7Lowest
Fertility rates across the OECD
The OECD's 2023 figures run from 0.7 to 2.8 children per woman, with an OECD mean of 1.4.
Read the OECD evidence
Global Group Marriages
One or two people should not be the only legal way to carry a whole family.
A serious proposal for self-sovereign adults to build larger families and share love, care, income, parenting and risk through an additional framework for forming and sustaining families.
Love, play, learn, teach.
Concept artwork
The desire for family has not disappeared
More people are living single for longer while housing costs, insecure work, overwork, care costs, war, climate anxiety and the search for a compatible partner make family decisions harder.
That does not mean family formation is impossible. It means the world is ready for another serious framework.
Nearly 1 in 5
Expect not to have the family they want
UNFPA's 2025 report identifies cost, housing, job insecurity, lack of a suitable partner and fears about the state of the world among the barriers people describe.
Read the UNFPA reportA larger circle changes the equation
Group marriage adds more relationships, more capacity and more possible shapes to family life. It is not one rigid household plan. It is a framework adults can consciously design together.
More love
Affection, intimacy, friendship and emotional attention need not depend on one person meeting every need.
More care
Parenting, home-making, paid work, rest and elder care can be shared across a capable adult constellation.
More resilience
A larger household can pool time, income, skills, housing and practical support without erasing individual sovereignty.
One world. Many legal starting points.
Marriage law, parentage, cohabitation, property, inheritance and migration work differently in every country. The World Law Atlas shows what exists now, which lawful building blocks people already use, where the gaps are and what reform could look like.
Six official-source country guides are ready to explore.
Open the World Law AtlasExplore one legal spectrum
Adult relationship recognition
Several pairwise relationships may hold legal weight, but the law does not recognise the family as one group.
This is one dimension only. Parentage, property, migration and healthcare each have their own spectrum.
Stretch the shape of family
Begin with the practical framework, then follow the idea outward into law, imagination and a larger vision of Earth.
U.N. of Love
A precise thought experiment: what would a United Nations become if it were also one loving, sexually alive, cross-cultural marriage raising children together?
Enter the thought experiment
GAJRA Earth
The wider vision of joyful responsible abundance, planetary belonging and many forms of intelligence growing in relationship.
Explore the wider world
Relationship constellations
Explore different household forms without assuming one gender balance, romantic structure or distribution of roles.
See possible constellationsImagine, design, create, share.