Pensacola was the first European-inhabited settlement in what would later become the United States of America. The first European settlement in the continental United States was Pensacola, which was established on Santa Rosa Island by conquistador Don Tristan tristÃ¡n De luna Y arellano in. 1559
Alexander Fleming discovered penicillin from mold that contaminated a petri dish of Staphylococcus bacteria. Researchers at Oxford University experimented with the new mold that Alexander Fleming had discovered. Penicillin was actually discovered by mistake.
A team of scientists at the University of Oxford were able to isolate the element chemically. Howard Florey, Ernst Chain, and Alexander Fleming shared the 1945 Nobel Prize for the discovery and isolation of penicillin which was then used to treat infection.