Chichén Itzá, Mexico — At the spring and fall equinoxes, the setting sun casts serpent-like shadows along the northern stairs of El Castillo, or “the castle.” Built more than a thousand years ago by ...

The Great Pyramid of Giza is often treated as a monument of stone, but it also functions as a monument of numbers. I see at ...

Archaeologists working in a tunnel beneath Teotihuacan's Pyramid of the Sun have unearthed two caches of artifacts that may have been meant to consecrate the massive building's construction around a.d ...

MOVING WALL The "moving wall" represents the time period between the last issue available in JSTOR and the most recently published issue of a journal. Moving walls are generally represented in years.

Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Eric's career includes extensive work in ...