Photo by: Wikimedia Commons

Wikimedia Commons

Alexander Fleming's Accidental Discovery Of Penicillin

By: Ashley Hamer

His poor cleaning habit leads to an amazing moment.

August 01, 2019

Alexander Fleming, a professor of Bacteriology at St. Mary's Hospital in London, didn't do a great job of cleaning his laboratory before heading out on vacation in 1928. When Fleming came back, he began cleaning the petri dishes on which he was experimenting with bacteria. On one dish, however, he found a mold growth. In the area around the mold growth, there was no bacteria. There was bacteria in other parts of the petri dish, but the mold was sitting in an area alone. Fleming had a "eureka!" moment, as he had just accidentally discovered an antibiotic. Learn more about his world-changing discovery with the videos below.

This article first appeared on Curiosity.com.

Next Up

William Shatner is going where no 90-year-old has gone before

The Star Trek star will become the oldest person to go to space when he launches aboard a Blue Origin rocket on Wednesday, October 13. Watch live coverage on Space Launch LIVE: Shatner in Space on Discovery and Science Channel starting at 8:30A ET with liftoff scheduled for 10A ET.

Canadian Museum Rediscovers a New Ancient Shark Species - The First of its Kind

The Canadian Fossil Discovery Centre has recently “rediscovered” an ancient shark skeleton that has been sitting in the museum’s collection for nearly 50 years. Could this shark be a part of a newly discovered ancient shark species?

Microplastics in Blood Spotlight Health Emergency from Plastic Pollution

Plastic pollution is growing rapidly across Earth’s ecosystems and its threat to humanity and wildlife is too. Outcomes for health and the environment will be dire unless we tackle it, says a United Nations (UN) report. But the discovery of microplastics in human blood means urgent action is needed.

Does this Incredible New Discovery Mean We Should Believe in Fairies After All?

Archaeologists in China recently unveiled a fascinating new discovery of ancient communities worshiping fairies, after unearthing a “one of its kind” treasure trove at the famous Sanxingdui archeological site.

113 Million-Year-Old Dinosaur Tracks Uncovered Due to Drought

Severe drought conditions dried up a river at Dinosaur Valley State Park in Texas leading to the pre-eminent discovery.

2 New Species Of Dinosaurs Found In Northwest China

A tale of two species. Massive sauropod dinosaurs discovered in northwestern China is the region’s first fossil discovery.

Ice Age Cave Lion Cubs Found Perfectly Preserved Deep in Siberian Arctic

In Discovery’s BEASTS OF THE ICE AGE documentary, scientists uncovered new discoveries of frozen mammoths, cave lions, and other prehistoric animals in a mysterious Siberian cave. Today, experts share more on their findings since the first discovery of the frozen lion cubs in 2017 and 2018.

Space Launch LIVE Discussion Guide

Tune into Discovery Channel and use this companion discussion guide to spark meaningful conversation about the next era of space flight. Stream SPACE LAUNCH LIVE on discovery+.

NASA and SpaceX are Going on a Date, and We're All Invited

Save the date--On May 27th, if everything goes as planned, a rocket will launch from Kennedy Space Center in Cape Canaveral, Florida. Watch SPACE LAUNCH LIVE: AMERICA RETURNS TO SPACE on Discovery and Science Channel starting at 2P ET.

Avengineers Assemble! Discovery Teams Up with Mark Rober and Jimmy Kimmel In All-New Prank Series

Mark Rober and his team of “Avengineers” are out to catch troublemakers with some ingenious inventions.