Although a lot of the older generation refer to the past as the 'good ol' days', there are some parts of human history that are outright terrifying. Read this complete list and you will understand why. The horrors are not only limited to these facts so if you do enough research, you will find some really odd and frightening stories that will leave you in shock.
Researchers At Princeton University Transformed A Cat Into A Telephone
In 1929, a researcher at Princeton University, Ernest Glen Weber, and his research assistant, Charles William Bray, decided to crack open the skull of a cat and experiment with a live auditory nerve. They attached live wires to create a transmitter and proved several theories of sound when their experiment was successful. However, this experiment raised quite a lot of issues with animal rights activists.