It’s Breathe Week - a whole week of episodes about one of the most important things our bodies do to keep us alive and healthy. If we need oxygen to breathe, and oxygen comes from trees, and there aren’t that many trees in the desert, how do people breathe in the desert? We asked pediatrician Stephanie Lovinsky-Desir to help us find the answer.

Got a question that you just can’t under-sand? Send it to us at BrainsOn.org/contact, and we’ll help quench your thirst for the answer.