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.

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, ...

Here, we explore six notable civilizations that have collapsed, shedding light on some of the causes behind their demise and some interesting parallels relative to today. Ancient civilizations that ...

(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 ...