The Society of St. Andrew in Big Island, Va., was founded in 1979 and began salvaging potatoes and other produce in 1983. It operates a Gleaning Network and Potato & Produce Project that salvage unpicked usable produce. It has regional offices in six Southern states and gleaning operations in 14 states. Mike Hickcox is the communications director.

The Souper Bowl of Caring mobilizes young people to do something about hunger and poverty. Born of church youth groups in Columbia, S.C., in 1990 and pegged to Super Bowl weekend, by 2009 the event generated more than $10 million for anti-hunger and poverty groups. Find local participating groups.

Presbyterian Hunger Program is a ministry responding to hunger and poverty domestically and abroad. Rebecca Barnes is the coordinator.

The Muslims Against Hunger Project is a North American network of volunteer communities to involve Muslims in efforts to combat hunger and homelessness.

Foods Resource Bank is made up of 15 Christian denominations and agencies that work at the grass roots with farmers and communities to develop local food security. Modeled after a Canadian program, it has both overseas and U.S. projects. Contact Marv Baldwin, president and CEO of the group, which has offices in Illinois and Michigan.

The ELCA World Hunger program helps alleviate hunger through advocacy, education, relief and sustainable development.

Catholic Charities USA works in various areas such as adoption counseling, disaster relief, poverty awareness and raising awareness of social issues such as human trafficking and racial inequality. It works to provide aid to people in need and to activate the Catholic population to action. Kerry Alys Robinson is president & CEO.

WhyHunger is a New York-based organization that focuses on hunger and poverty nationally and internationally. Contact through Debbie Grunbaum.

The U.S. Conference of Mayors, the organization of American cities with populations of 30,000 or greater, has been surveying hunger and homelessness in urban areas for more than two decades.