Solar system: Did you mean...?

A map of the Inca road system which included some 40,000 km of routes.

The underground channel of a qanat in the Turfan water system in the Turpan Depression of Xinjiang, China.

Intercultural referral model used in Dino Stagno Hospital, Traiguen, Chile.

The gods and goddesses of Ancient Egypt were an integral part of the people's everyday lives for over 3,000 years. There were over 2,000 deities in the Egyptian pantheon, many whose names are well known - Isis, Osiris, Horus, Amun, Ra, Hathor...

Ancient Greek astronomy was the study of the universe to understand how it functioned and why apart from the established theistic model that claimed all things were ordered and maintained by the gods. Ancient Greek astronomers relied on observation...

In recent years, a persistent criticism has been leveled against the use of the BCE/CE system (Before the Common or Current Era/Common or Current Era) , rather than BC/AD (Before Christ/Anno Domini or 'Year of Our Lord'), in dating historical...

Construction of the Dujiangyan irrigation system began in the 3rd century B.C. This system still controls the waters of the Minjiang River and distributes it to the fertile farmland of the Chengdu plains. Mount Qingcheng was the birthplace...

View full lesson: https://ed.ted.com/lessons/how-the-world-s-first-subway-system-was-built-christian-wolmar It was the dawn of 1863 CE, and London's not-yet-opened subway system — the first of its kind in the world — had the city in an...

The Celtic languages form a branch of the Indo-European (IE) language family. They derive from Proto-Celtic and are divided into Continental Celtic languages (Lepontic, Gaulish, Galatian, Noric, Celtiberian, Gallaecian) and Insular Celtic...

After twenty years of abandonment, and even forty in the case of the branch of La Hijuela, the traditional irrigation system of Barjas was rehabilitated in collaboration with the National and Natural Park of Sierra Nevada, and CEAMA. This...