Satellite imagery shows a timelapse of smoke plumes forming over the southwest U.S. states of Arizona, Colorado, Utah, and ...

An extreme heat warning is in effect for Lake Mead and the surrounding areas on Monday, highlighting the risk of "lethal temperatures" as triple-digit highs are expected.

Russia has been upgrading and modernizing several nuclear bases for its European and Pacific forces. Business Insider obtained new satellite images that show the major construction at the sites.