As one can see from Google's search page, it's aviatrix Amelia Earhart's birthday (b. July 24 1897). Really cool lady. She disappeared over the Pacific Ocean in 1937, probably because of that guy she flew with (Fred Noonan) who chose to navigate after the stars. Kind of difficult when it's cloudy. But read the Wikipedia page for more accurate details concerning her disappearance. Or better yet, listen to the awesome podcast Stuff You Missed in History Class from HowStuffWorks. The episode I'm referring to was posted July 16th. Go listen to it!