More than half of the world’s 25.4 million refugees are children. They often spend years, if not their entire childhoods, displaced.

What does this mean for early childhood development? How are they affected by lack of access to education or psychological help? And how does toxic stress impact the rest of their lives?

Joining this discussion are Lynne Jones, writer, aid worker and visiting scientist at FXB Center for Health and Human Rights at Harvard University, and Sweta Shah, global lead of early child development for the Aga Khan Foundation.