Deserts are diverse ecosystems that occur on all seven continents. Learn about the four major types of deserts, the surprising amount of wildlife some of them contain, and how new desert areas are beginning to form.
Native to Southeast Asia, the endangered red-shanked douc langur is known for its striking appearance. The 'Queen of the Primates" has bright maroon 毛皮 from its knees to its ankles.
Ever since the light bulb's invention 150 years ago, artificial light has illuminated homes, streets, and skies -- but with some unintended consequences.
The temples of Angkor are architectural masterpieces laden with artistic treasures, like the bas-relief galleries that tell enduring tales of Cambodian history and legend.
Mohenjo Daro, built at the time of the pyramids and centuries before the Roman Baths, was the largest city of the Indus Civilization. Learn facts about this ancient city, including engineering feats like the Great Bath.