In this photo taken Sunday, June 21, 2009, a Myanmar girl looks on from her home in Nyaungdon, 50 kilometers (31 miles) west of Yangon, Myanmar. Khin Maung Win/AP
Tibetan school children play with a paper cup tied to another with a string at a science exhibition under the Tibetan Monastic Science Initiative which began in 2000 at the request of the Dalai Lama, in Dharmsala, India, Tuesday, June 23, 2009. 50 Buddhist monks have been undergoing training in western science under the initiative. Ashwini Bhatia/AP
President Barack Obama smiles as he listens to a question during a news conference at the White House in Washington, Tuesday, June 23, 2009. Ron Edmonds/AP
Estimates of the number of disappeared people in Mexico during a decade of drug and gang violence rival numbers from Argentina's Dirty War and Colombia's armed conflict. New laws protecting victim's rights require the government to establish a national registry of those who have disappeared.
ByEmily Pickrell, Contributor
One of the startling unknowns in the story of Mexico’s recent wave of violence is just how many people can be counted among its disappeared.