It's a question people have been asking for millennia, but in the past century we started to build machines that would help us find out. Here are some of the most insane moments in the history of sound-location technology.
WWI facial prosthesis - because of trench warfare, so many wounds were to the head and face. Before plastic surgery was common, doctors and artists worked together to give returning young soldiers a way to fit back into society.
Astronaut Steve Smith works on Hubble during the second servicing mission in 1997 with a ratchet. NASA specially designed the power tool to withstand the harsh environment of space, making it an essential item during three different Hubble missions.
A top sniper, codenamed 'Arrow,' loads her gun in a safe room in Sarajevo, June The old Serb who shoots for the Bosnian forces says she has lost count of the number of people she has killed - -- OPENPICS.