Editor’s note: This article, distributed by The Associated Press, was originally published on The Conversation website. The Conversation is an independent and nonprofit source of news, analysis and ...

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 ...

Civilizations rarely collapse all at once. They erode slowly morally, spiritually and culturally before the final political ...

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, ...