Hi, in the world of science every day many new things discovers that will bring new things to the world. One of the best fields is medicine because it brings hope for many people when scientists find a new treatment, or cure for a disease. In the past infection was much more than today and a discovery to cure it was very valuable. And the discovery of penicillin was very valuable because it was the first cure of infections with this power. And this happen in 1928 by Alexander Fleming. Let's watch the video about discovery of penicillin I hope you enjoy it.