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

Scientists Have Discovered Enormous Balloon-Like Structures in the Center of Our Galaxy

There's something really, really big in the middle of our Milky Way galaxy — one of the largest structures ever observed in the region, in fact.

Farewell, Earth’s Mini-moon

It's time to say goodbye to the mini-moon that's no bigger than your car.

The Secret of Pluto’s Ocean

When we think of an ocean, we don't necessarily think of Pluto. If we can’t see the liquid water, why do astronomers think it’s there?

Lowell Observatory Astronomers Celebrate Hubble

Astronomers from Lowell Observatory in Flagstaff, Arizona celebrate the 30th Anniversary of the Hubble Space Telescope with personal stories from their research.

Why Does Pluto Have Such a Weird Orbit?

Pluto is the black sheep of the planets in our solar system and it looks like astronomers aren’t sure how long Pluto will remain in its present orbit.

When Was There Life on Venus?

What we have is a cosmic whodunit. Venus, the second planet from the sun and considered by the more romantic types as "Earth's twin" and the avatar of love, is dead.

4 Reasons Why Earth is the Best Planet to Call Home

Since 1970, folks from around the world have gathered together to celebrate Earth Day, an appreciation for all the good stuff we’ve got here on the Earth – and a reminder to try not to mess it up. But what’s so special about the Earth, anyway?

DNA's Building Blocks May Have Their Origins in Outer Space

One of life's building blocks could have originated in outer space. But if this experiment shows how these building blocks actually formed, how exactly did they get to Earth?

May Sky Watch: What to Look Out For This Month

Whether you can see it from home or stream it online, here are some of May's wonderous celestial events.

Stuck at Home? What to See in the Night Sky this Month

In times of darkness and incertainty, opt for exploration of wonder in the skies.