You might wonder how your baby breathes while still in your womb, surrounded by amniotic fluid. After all, the lungs are not filled with air before birth, and your baby relies entirely on the placenta ...

One year ago, Congress defunded public media. Now that we're 100% community funded, please become a sustaining member or increase your existing membership today. Listen 4:50 Human beings breathe an ...

From the day we're born, we know how to breathe correctly. That means letting the diaphragm—the large, thin muscle just below the rib cage—do the work of drawing air into the lungs and letting it out.