Add Yahoo as a preferred source to see more of our stories on Google. Aghazadeh Mansion, a national historic site in Iran, was built with elaborate wind towers and other natural cooling techniques.

Consider this, if you would: a network of far-flung, powerful, high-tech civilizations closely tied by trade and diplomatic embassies; an accelerating threat of climate change and its pressure on food ...

“Great civilizations are not murdered. Instead, they take their own lives.” The great historian Arnold Toynbee concluded this in his 12-volume magnum opus A Study of History. It was an exploration of ...

(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) Adriana Zuniga-Teran, University of Arizona (THE CONVERSATION) Modern buildings tend ...

No nation possesses permanent supremacy. No empire can escape the passage of time. This realization should inspire humility. Nations that appear invincible today may face unforeseen challenges ...

Life as we know it is being threatened by everything from climate change to resource depletion. Commentator Adam Frank looks back at 1177 B.C. —... Consider this, if you would: a network of far-flung, ...

Modern buildings tend to take electricity and air conditioning for granted. They often have glass facades and windows that can’t be opened. And when the power goes out for days in the middle of a heat ...