| The rise and fall of the Lakota Empire By Pekka Hämäläinen, directed by Mohammad Babakoohi & Yijia Cao In 1776, a powerful empire was born in North America. The Lakotas had reached the Black Hills, the most sacred place and most coveted buffalo hunting grounds in the western plains. Located in what is now South Dakota, control of the Black Hills, or Paha Sapa, marked the tribe as the dominant power in the American West. Pekka Hämäläinen explores the rise and fall of the Lakota Empire. View the animation » | | | What makes a language... a language? By Martin Hilpert, directed by Luísa M H Copetti, Hype CG Outside of China, Mandarin and Cantonese are often referred to as Chinese dialects, despite being even more dissimilar than Spanish and Italian. On the other hand, speakers of Danish, Norwegian, and Swedish, which are three distinct languages, can usually communicate with each other in their native tongues. So, when is speech considered a dialect versus a language? Martin Hilpert investigates. View the animation » | | |