Clyde Tombaugh discovered Pluto in 1930 at Lowell Observatory in Flagstaff. Here's how Pluto won - and lost - its planetary status.
Donald Trump changed the name of the "Gulf of Mexico." Google Maps updated their systems. Mexico's President continues to threaten a lawsuit.
The name change to Gulf of America is the first since the 1540s where various maps referred to it as the Mexican Gulf, Golpho de la Nueva España, and, finally Gulf of Mexico.
Arizona is no stranger to weird and wild things. These nine landmarks were recently named the strangest in the state by World Atlas. Here's why.