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 (1928) Discovered by Alexander Fleming (Scot). who found the growth of penicillin on a jar of mould left overnight. Penicillin was later mass produced by Howard Florey (Aus) and a team of scientists enabling it to be used during the Second World War.