In the United States, some 10% of people who wish to have children struggle with infertility. It's prevalent in the African American community, and fertility preservation can also be difficult for transgender individuals. But why is this? And what can be done about it? NOVA explores barriers to fertility, from the social to the biological, and the state of assisted reproductive technologies. Follow the journeys of people navigating challenges from structural inequalities and racism to falling sperm counts, egg freezing, and IVF.