New findings suggest ways to reduce child marriage by large margins.

A study by Population Council in Bangladesh, called the BALIKA project, found that providing girls with educational support and training on gender rights and decision-making reduces the likelihood of child marriage by one third.

It was about girls articulating what they wanted, Amin said. "What made a difference was showing that girls are of value, that they can do something beyond the reproductive and the domestic; that they are assets, not liabilities.