There is an old saying that you can’t go home again. When the chance came for Clara Pratte (HNZ’04) to go home again, it involved more than just a return to her family. It meant going home to a nation. It meant being a leader—a Nat’’aanii—for Navajo Nation.

Recreational drugs and their impact on society have been grabbing headlines for decades—everything from their effect on users to whether they should be legalized. For Carnegie Mellon professor Jonathan Caulkins, drugs have been more than headlines; analyzing drug policy has been a large part of his career.