How Alexander Fleming Discovered Penicillin

Server Costs Fundraiser 2024

Help our mission to provide free history education to the world! Please donate and contribute to covering our server costs in 2024. With your support, millions of people learn about history entirely for free every month.
$2758 / $18000


John Horgan
by People Who Changed the World
published on 19 June 2024

Alexander Fleming was a Scottish doctor and microbiologist who discovered the world’s first effective antibiotic: penicillin. This discovery revolutionized medicine, and has been described as the single greatest victory ever achieved over disease. It’s estimated that well over 200 million people have had their lives saved by penicillin, and it continues to be an effective medicine used all around the world to this day.

In this video we’re going to tell the story of Alexander Fleming’s life. Examine how he discovered penicillin, how it transformed medicine, and how Fleming’s discovery ushered in a new age of civilisation. And then finally explore the terrifying possibility of antibiotics, like penicillin, no longer working. This is how Alexander Fleming Changed the World.

——- How Alexander Fleming Changed the World Video Chapters:
00:00 - Introduction
01:02 - Early Life
02:45 - The First World War
04:17 - Lysozyme
07:25 - Untidiness
07:58 - Discovery of Penicillin
09:51 - Sharing His Discovery
10:56 - First Medical Use of Penicillin
12:15 - International Congress of Microbiology
14:01 - The Oxford Breakthrough
16:06 - Human Trials
17:27 - Perspective
18:14 - WW2
19:08 - United States of America
20:45 - The Penicillin Committee
21:54 - See your doctor today!
22:50 - Awards and Titles
23:35 - Commercialisation of Penicillin
24:26 - Fleming’s Death
25:15 - Uses of Antibiotics
26:11 - Antibiotic Resistance
28:38 - Overprescription
29:28 - Animal Agriculture
30:26 - Developing New Antibiotics
31:47 - Conclusion

Thank you so much for watching. It really means the world to me to know you’re watching my videos. Please consider subscribing to People Who Changed the World. It’s just me creating these videos, and they take a long time to make, but rest assured I am working on the next video.

Video researched, written, produced, and edited by me… William Payne. You can follow me on twitter if you like. -

Sir Alexander Fleming FRS FRSE FRCS was a Scottish physician and microbiologist, best known for discovering the world's first broadly effective antibiotic substance, which he named penicillin. Alexander Fleming Biography. Alexander Fleming Documentary. Discovery of Penicillin. The Man Who Saved 200 Million People (Alexander Fleming)

I hope you enjoyed watching the video How Alexander Fleming Changed the World

#Alexander #Fleming #Penicillin

Remove Ads

Cite This Work

APA Style

World, P. W. C. t. (2024, June 19). How Alexander Fleming Discovered Penicillin. World History Encyclopedia. Retrieved from

Chicago Style

World, People Who Changed the. "How Alexander Fleming Discovered Penicillin." World History Encyclopedia. Last modified June 19, 2024.

MLA Style

World, People Who Changed the. "How Alexander Fleming Discovered Penicillin." World History Encyclopedia. World History Encyclopedia, 19 Jun 2024. Web. 18 Jul 2024.