Author of Diet for a Small Planet and co-author of World Hunger: Twelve Myths. She is co-leader of the Small Planet Institute in Cambridge, Mass., and was a co-founder of the Institute for Food and Development Policy (Food First). Contact through Rod Meade Sperry, outreach and operations director.

Eric Holt-Gimenez is executive director of the Institute for Food and Development Policy (Food First), which works to eliminate the injustices that cause hunger. It’s based in Oakland, Calif.

Nancy Morawetz is a professor of clinical law at New York University. She is an expert on immigration and teaches courses on immigrant rights clinics. She can discuss the U.S. system of detention and deportation.

The World Hunger Education Service in Washington, D.C., posts definitions and data on global hunger and provides links to news stories on the topic. Daniel E. Shaughnessy is chairman.

The Food and Agriculture Organization of the United Nations works to eliminate world hunger. Its headquarters are in Rome, but it has a liaison office with North America in Washington, D.C.

Read a June 29, 2013, story from The New York Times about Texas’ record of executed inmates’ last words. The state, with the highest number of executions in the U.S., keeps an online database of the executed’s last words.

Suzanne Maloney is a senior fellow at the Saban Center for Middle East Policy at the Brookings Institution in Washington, D.C. She is an expert on Iran and the Gulf States and has written about religion and human rights in the region.

Mark A. Costanzo is a psychology professor at Claremont McKenna College in Claremont, Calif. He is an expert on the death penalty, nonverbal communication, expert testimony and social psychology. He wrote Just Revenge: Costs and Consequences of the Death Penalty.

Defense lawyer Gregory J. Kuykendall specializes in capital cases and wrote about the politics of death sentencing in Arizona. He is also lead death penalty counsel to the Mexican Foreign Ministry.