(NewsNation) — Major cities across the United States are on heightened security alert following Saturday night’s air strikes targeting nuclear facilities in Iran, with law enforcement agencies ...

Restricting Tehran’s growth and water use — however politically difficult — would be more prudent than trying to engineer ...

The Iranian capital of Tehran is one of the worst cities in the world for air quality. The World’s host Carolyn Beeler speaks with Kaveh Madani, director of the United Nations University Institute for ...

A National Terrorism Advisory System bulletin issued by the Department of Homeland Security warning of a "heightened threat environment" following U.S. strikes on Iranian nuclear sites, is ...