Chichen Itza was one of the largest Maya cities and it was likely to have been one of the mythical great cities, or Tollans, referred to in later Mesoamerican literature. The city may have had the most diverse population in the Maya...

Military Appreciation Month // National Military Appreciation Month started as a simple idea; to gather America around its military family to honor, remember, recognize and appreciate those who serve and have served all while knowing its...

A Maya warrior describes the game of ulama, the Ancient Maya sport played in a ball court.

In this session you will learn how to calculate gain ratio, sacrifice ratio, & new profit sharing ratio in different scenarios.

Jason Stanley is the Jacob Urowsky Professor of Philosophy at Yale University. Before coming to Yale in 2013, he was Distinguished Professor in the Department of Philosophy at Rutgers University. He has also been a Professor at the...

What are some of the limitations of current climate models?