This week, we’re trying an experiment that will give you a little something extra while you’re listening. To get started text “Hey Al” to 202-873-8325.

The world’s first “test tube baby” turns 40 next year. As she’s grown up, so has the medical specialty that produced her: in vitro fertilization. It’s a big business addressing a big demand.

On this episode of Reveal, we examine the stakes – and high costs – of IVF.