Hunting and gathering, humanity's first and most successful adaptation, is far less necessary in today's world. However, some still feel the urge to track treasures across the globe. Once global ...

Geo-cache. A stash of 1990s economy cars? A collection of world maps? A sneeze heard ‘round the world? Nope. Think modern-day treasure hunt with a high-tech twist. Geocaching involves a “hider” ...