15 Most Inhuman and Frightening Scientific Experiments in the History

14. Sadistic twin experiments of Josef Mengele

German doctor was performing experiments on Auschwitz concentration camp prisoners during the Second World War. He had specific interest in twins. According to different data around 900 up to 3 thousand twins overall were subjects of scientist’s idea, no more than 300 have survived. Mengele tried to change eye color by spraying different chemicals into eyes, he was amputating organs, sewed twins together along many other insanities that came to his mind.