A letter addressed to the then-Duke and Duchess of Cambridge, urging Kate Middleton to consider forgoing having Prince Louis, sparked a debate about family planning and environmental sustainability. The letter, signed by the president of a San Francisco-based children's organization, Carter Dillard, and executive director, Anne Green, emphasized the importance of planning families with the future environment in mind. It highlighted the potential impact of having a third child on the planet's resources and the well-being of future generations. The letter suggested that instead of having more children, families could redirect resources to support other families in providing a fair start in life for their children. This controversial perspective sparked discussions about the role of public figures in environmental advocacy and the ethical considerations of family planning. The letter's message resonated with the public, especially those concerned about the environmental impact of population growth and the well-being of future generations. It raised questions about the balance between having children and contributing to a sustainable future, and invited readers to consider alternative ways to make a positive impact on the world.