Geocaching is a newer sport that combines treasure hunting, trekking and puzzling, using handheld GPS units to track down the exact coordinates of goody boxes the world over. It has caught on in a big way in Northern Utah. Though many sports have their origin stories, few are as precise as geocaching's. On May 3, 2000, a man known as the Adam of geocachers, Dave Ulmer, planted the first cache in Oregon -- a black plastic bucket containing software, videos, books, food, money and a slingshot, and posted the coordinates online. This cache was made possible by the fact that the day before, on May 2, the U.S. government turned off Selective Availability, a program that limited the accuracy of GPS for nonmilitary purposes. The new, improved accuracy for the general public made it possible for small containers to be accurately placed by one person, and found by another, using the same set of GPS coordinates. Thus, a new satellite-guided breed of treasure hunter was born.