California's economy is the largest of any U.S. state, with a $4.0 trillion gross state product as of 2024[update]. It is the largest sub-national economy in the world. California's agricultural industry has the highest output of any U.S. state, and is led by its dairy, almonds, a...
In the Western Hemisphere, a kind of indigenous civilization, the Norte Chico civilization, flourished from 3000 BC to 1800 BC. This civilization was mainly composed of four valleys, namely, the Supe, Pativilka, Fortaleza, and Huaura Rivers, in the coastal areas of central and northern Peru; ...
Article Regional Water Footprint Assessment: A Case Study of Leshan City Rui Zhao 1,2, Hualing He 1 and Ning Zhang 3,4,* Received: 26 September 2015; Accepted: 10 December 2015; Published: 15 December 2015 Academic Editors: Yongrok Choi, Malin Song and Seunghwan Myeong 1 Faculty of ...
The UN also projects that, by 2030, 60% of the global population will live in urban areas [1]. Thus, it can be seen that cities are growing in an extensive manner. To scale basic services to the extent of increasing demand forms a challenge for the cities. A "smart city" that ...