Loading...
Science, engineering, and mathematics — biology, chemistry, physics, astronomy, earth sciences, social sciences, and technology research. A curated gateway to academic and professional scientific resources.
57129 resources
Photo gallery: sells high-resolution images; displays freely re-usable medium-resolution images.
Includes a multimedia tour of the ruins, the museum, and the visitor center.
Includes video clips [RealVideo and QuickTime].
Photo gallery with notes for tourists.
Encyclopedic entry for the Pre-Columbian city in Honduras now known as Copán. It was the site of a major Maya kingdom of the Classic era.
Mayan city, abandoned in the early 10th century, now designated as a World Heritage site.