Austria's Gregor Schlierenzauer, Norway's Anders Jacobsen, and Germany's Michael Neumayer stand on the podium after the individual Large Hill Ski Jumping World Cup on Feb. 6, 2010. Johannes Eisele/Reuters
French ski jumper Nicolas Mayer flies during a training jump at the Four Hills Ski Jumping tournament in Oberstdorf, southern Germany, on Dec. 28, 2008. Christof Stache/AP
Simon Ammann of Switzerland soars through the air during the practice round of the Ski Jumping World Cup competition in Zakopane January 23, 2010. Ammann went on to win second-place. Kacper Pempel/Reuters
Andreas Kofler of Austria gets ready for his practice jump as his teammate Gregor Schlieranzauer (right) and Switzerland's Simon Ammann look on before the qualification for the World Cup Ski Jumping team event in the German city of Klingenthal Feb. 2, 2010. Petr Josek/Reuters
Anders Jacobsen from Norway celebrates the team's second-place finish at the Team Ski Jumping World Cup in Oberstdorf Jan. 30, 2010. Team Austria won the competition ahead of team Norway and team Finland. Michaela Rehle/Reuters
Austria's Gregor Schlierenzauer soars through the air during a practice jump before the qualification for the World Cup Ski Jumping team event in Klingenthal, Germany on Feb. 2, 2010. Petr Josek/Reuters
Gregor Schlierenzauer of Austria has collected more than 21 World Cup gold medals in his young career. He is shown here at a World Cup Ski Jumping event in Klingenthal, Germany. Petr Josek/Reuters
A picture combination shows Germany's Michael Neumayer (left-right first row) Pascal Bodmer, Martin Schmitt and Michael Uhrmann as they soar through the air during the Large Hill Team Ski Jumping World Cup competition in Willingen, Germany on Feb. 7, 2010. Johannes Eisele/Reuters
A ski jumper makes his way back to the chairlift at Whistler Olympic Park in Whistler, British Columbia. Olympic organizers expect around 2.3 million attendees during the Games' two weeks. Jonathan Hayward/The Canadian Press/AP
Matti Hautamaeki of Finland glides through the air during a qualifying round of the Ski Jumping World Cup in Zakopane, Poland on Jan. 21, 2010. Kacper Pempel/Reuters
Martin Koch (standing left-right), Wolfgang Loitzl, Andreas Kofler (sitting left-right) and Gregor Schlierenzauer of Austria pose on the podium after winning the Team Ski Jumping World Cup in Oberstdorf, Germany Jan. 30, 2010. Michaela Rehle/Reuters
Anders Johnson flies off the 127 meter jump during training for the US Ski Jumping and Nordic Combined Championships at Howelsen Hill on Jan. 20, 2006 in Steamboat Springs, Col. Doug Pensinger/Getty Images
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.