A sonar profile view of SS City of Rio de Janeiro above a painting of the steamer. Coda Octopus (top) and painting of SS City of Rio De Janeiro /NOAA (top); Mystic Seaport (bottom) hide caption

itoggle caption Coda Octopus (top) and painting of SS City of Rio De Janeiro /NOAA (top); Mystic Seaport (bottom)

U.S. Border Patrol agent Richard Funke looks for footprints from illegal immigrants crossing the U.S.- Mexico border near Nogales, Ariz., in 2010. John Moore/Getty Images hide caption

itoggle caption John Moore/Getty Images

French riot policemen force out migrants who were hidden in a truck that was making its way to the ferry terminal in Calais in western France on Wednesday. The cross-Channel port has become the last barrier for economic and political migrants trying to enter Britain illegally. Pascal Rossignol/Reuters/Landov hide caption

itoggle caption Pascal Rossignol/Reuters/Landov

Mina Bestman moved to Georgia from Liberia almost 20 years ago. She owns Mina's Cuisine, a West African restaurant that caters to homesick Liberians. Dustin Chambers for NPR hide caption

itoggle caption Dustin Chambers for NPR

Lindolfo Carballo, an immigrant from El Salvador, meets his son, Raynel, outside school. In El Salvador, he says, families often "teach their boys one thing and their girls differently." He's trying to set a different example for his children. Sarah Tilotta for NPR hide caption

itoggle caption Sarah Tilotta for NPR

A slide of migratory flows in the Mediterranean Sea from the Mare Nostrum operation is displayed in the control room of the Italian operation, which tracks and intercepts migrant ships en route to Europe. Sylvia Poggioli/NPR hide caption

itoggle caption Sylvia Poggioli/NPR

Demonstrators from opposing sides confront each other while being separated by police officers on July 4, outside a U.S. Border Patrol station in Murrieta, Calif. Mark J. Terrill/AP hide caption

itoggle caption Mark J. Terrill/AP

Hot Bread Almacen, the retail shop of Hot Bread Kitchen, is located in the historic La Marqueta building in East Harlem, New York. Daniel Krieger for Hot Bread Kitchen hide caption

itoggle caption Daniel Krieger for Hot Bread Kitchen

Mark Karney found the recipe for his mother's Hungarian nut roll in a dusty recipe box after she passed away. After lots of experimentation, he figured out how to make it and has revived it as a Christmas tradition. Courtesy of Mark Karney hide caption

itoggle caption Courtesy of Mark Karney

Footprints mark the spot where immigrants stand while taking eye tests at the Salud Family Health Clinic in Ft. Collins, Colo. The nonprofit provides health care to immigrants seeking asylum and migrant farm workers. John Moore/Getty Images hide caption

itoggle caption John Moore/Getty Images

Migrants arrive in Valletta, the Maltese capital, aboard a patrol boat on Oct. 12, a day after their boat sank, killing more than 30 people, mostly women and children — just the latest deadly migrant tragedy to hit the Mediterranean. Despite Europe's financial crisis illegal immigrants continue to attempt to enter Europe through its southern coastal countries as they seek a better life. AFP/Getty Images hide caption

itoggle caption AFP/Getty Images