Here's a heartwarming story from Ireland, stemming from the era in which children born out of wedlock (and their mothers) were thought disposable: A local historian from Tuam, Ireland, has documented almost 800 cases of children who died in a former children's home and are likely "buried" in a mass grave behind it.

Libya's National Transitional Council says it's located some 1,270 bodies in a mass grave—victims of a 1996 massacre of rioters at Abu Salim prison (pictured). The NTC has requested international assistance in identifying the bodies.

Another mass grave has been found in Mexico, this one with 18 bodies—likely the work of a drug cartel.

Eighteen tourists who disappeared in September were found in a mass grave in Acapulco, Mexico. The tourists, mostly mechanics who vacationed together every year, seem to have been killed as revenge against a cartel based in their home state, Michoacan.