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.
Penicillin was discovered in 1928 by the Scottish scientist Sir Alexander Fleming accidentally when he was conducting experiments in his laboratory. He noticed that microbes i â¦ n some of his cultures were killed off by the growth of Penicillium mold.e didn't. Alexander Fleming discovered Penicillin but Florey and Chain developed it and also mass produced it. Fleming discovered penicillin in 1928 and Florey and Chain deve â¦ loped it during the second World War.