A Mexico City breast-feeding campaigned used posters featuring topless celebrities. At least "La Barbie," a female boxer (shown here), had her boxing gloves on. Via Latin Times hide caption

itoggle caption Via Latin Times

Workers sort through key limes at a packaging house in Apatzingan, Michoacan. More than 90 percent of limes imported into the U.S. come from Mexico. Carrie Kahn/NPR hide caption

itoggle caption Carrie Kahn/NPR

In this June 2013 photo provided by National Geographic, diver Susan Bird, working at the bottom of Hoyo Negro, a large dome-shaped underwater cave in Mexico's Yucatan Peninsula, brushes the Naia skull found at the site. Paul Nicklen/AP hide caption

itoggle caption Paul Nicklen/AP

Joaquin "El Chapo" Guzman is escorted to a helicopter in handcuffs by Mexican navy marines at a navy hanger in Mexico City on Saturday. A senior U.S. law enforcement official said that Guzman, the head of Mexico's Sinaloa Cartel, was captured alive overnight in the beach resort town of Mazatlan. Eduardo Verdugo/AP hide caption

itoggle caption Eduardo Verdugo/AP

The skull of a female Neanderthal, who lived about 50,000 years ago, is displayed at the Natural History Museum in London. Rick Findler/Barcroft Media/Landov hide caption

itoggle caption Rick Findler/Barcroft Media/Landov

A 2010 file photo shows Edgar "El Ponchis" Jimenez Lugo in the city of Cuernavaca, Mexico. The teenage U.S. citizen who acknowledged being a drug-cartel killer has finished his three year juvenile-offender term for homicide, kidnapping and drug and weapons possession. Antonio Sierra/AP hide caption

itoggle caption Antonio Sierra/AP

Rosarito, Mexico, near the U.S. border in the Mexican state of Baja California, is home to thousands of Americans who live there full or part time, many in properties with long-term leases. A proposed change to Mexican law would allow foreigners outright ownership of Mexican beachfront properties. Guillermo Arias/AP hide caption

itoggle caption Guillermo Arias/AP