Roland Piquepaille writes: "Researchers at the University of Colorado at Boulder (CU-Boulder) and at NASA have used satellites to track the movements of people living in the Arenal region of Costa Rica more than 2,000 years ago. They've also used video-game software to virtually 'fly' above the footpaths taken by Central Americans between small villages and cemeteries. It's a fascinating story because Arenal Volcano is still very active and that the people who lived there didn't disappear as highly structured societies like the Maya and Aztec. And people living today in the Arenal region are certainly friendlier than your neighbors. Read more for additional references about this project and several pictures of beautiful Arenal Volcano, when it's quiet and when it erupts."