Penicillin was discovered by bacteriologist Sir Alexander Fleming in 1928. The accidental discovery occurred when he observed several mold spores had fallen on and destroyed bacteria in an open laboratory dish. More » History Inventions

According to, bacteriologist Alexander Fleming discovered penicillin in 1928. After returning from vacation, he noticed that mold had formed in a discarded Petri dish set aside from a contaminated experiment, a... More » Health Medications & Vitamins

Penicillin was discovered when Sir Alexander Fleming noticed that Penicillium notatum could neutralize a bacterial colony of Staphylococcus aureus, according to Fleming made the discovery by mistake when he le... More » Health Medications & Vitamins

Penicillin was discovered by Alexander Fleming in London, England in September, 1928. Fleming was a bacteriologist who worked at St. Mary's Hospital, and he found the Penicillium notatum mold on some Petri dishes contain... More » History Inventions

Penicillin was discovered by Alexander Fleming in 1928. Fleming was a Scottish scientist interested in bacteriology and immunology. Somewhat by accident, he determined that antibiotic properties could be derived from the... More » History Inventions

Scientists believe iron was first discovered in Egypt. Iron has been found in many ruins across the ages, ranging from as far apart as Mesopotamia and the western Roman Empire, but the oldest iron relics were found in Eg... More »

The existence of sulfur dates back to ancient times and is referred to in the Bible as "brimstone." In 1789, a French chemist named Antoine-Laurent Lavoisier recognized it and added it to his famous list of elements. In ... More »