One original and unique story that comes to mind is the story of Alexander Fleming and the discovery of penicillin.

Alexander Fleming was a Scottish physician and scientist who worked in the early 20th century. In 1928, he was working at St. Mary's Hospital in London, where he conducted research on bacteria and infections. One day, while he was working in his lab, he noticed something unusual. He had been growing a culture of a dangerous bacteria called Staphylococcus aureus, and he noticed that there was a strange mold growing on one of the petri dishes.

Fleming observed that the bacteria were not growing in the area around the mold. He observed this mold was Penicillium notatum and this strange mold had produced a substance that seemed to be killing the bacteria. Intrigued, he began to study this mold and the substance it produced, which he named "penicillin."

He found that Penicillin had powerful antibacterial properties and it could kill many different types of bacteria, including the ones that were responsible for serious infections. He also found that it was non-toxic to animals and humans. Fleming published his findings in 1929, but at the time, there was little interest in his discovery and no way to mass produce the Penicillin.

It wasn't until the 1940s, during World War II, when the importance of antibiotics became widely recognized, that mass production of penicillin began, and it saved many lives.

Fleming was awarded many honors for his discovery, including the Nobel Prize in Physiology or Medicine in 1945. Penicillin went on to become one of the most important medical breakthroughs of the 20th century, saving countless lives and revolutionizing the field of medicine.

It's truly an incredible story of how one man's curiosity and observation led to the discovery of a medication that would save millions of lives, and it's still used widely in the medicine to this day.