Volunteers at the Maryland Food Bank in Baltimore sort and box food donations on a conveyor belt. The bank started working with groups like the USO in 2013 to provide food aid to families affiliated with nearby military bases. Pam Fessler/NPR hide caption

itoggle caption Pam Fessler/NPR

Shabazz Napier of the Connecticut Huskies speaks to the media in the locker room after defeating Kentucky in the NCAA men's championship on April 7. Jamie Squire/Getty Images hide caption

itoggle caption Jamie Squire/Getty Images

Food banks have become a primary source of nutrition for rural farmworker communities in the Central Valley. Scott Anger/KQED hide caption

itoggle caption Scott Anger/KQED

A mural in the isolated city of Iqaluit, in Canada, where food insecurity is tied up with native culture, poverty, and high food prices. ascappatura/Flickr.com hide caption

itoggle caption ascappatura/Flickr.com

This Panera Cares store in Chicago switched from for-profit to nonprofit this summer, and it started asking customers to pay whatever they want. Niala Boodhoo for NPR hide caption

itoggle caption Niala Boodhoo for NPR