Summary: <p>This week's Please Explain we'll find out what nurses do, how they're trained, and why there always seems to be a shortage. <a rel="nofollow" class="guestlink">Dr. Bobbie Berkowitz</a><a rel="nofollow" class="guestlink"></a>, Dean of Columbia University School of Nursing, explains the art and science of nursing. She's joined by <a rel="nofollow" class="guestlink"> Ghislaine Chery</a>, nurse at Jamaica Hospital and for the Visiting Nurse Service of New York.</p>
