With almost 5 billion smartphone users worldwide, it’s impossible to get an exact number of people who have died or been injured taking selfies.

Clyde Tombaugh discovered Pluto in 1930 at Lowell Observatory in Flagstaff. Here's how Pluto won - and lost - its planetary status.

Arizona is no stranger to weird and wild things. These nine landmarks were recently named the strangest in the state by World ...