John Krieger

John Krieger

John Krieger

@johnkrieger -  Author

John's books

Live on Discovery

The Discovery of Germs

What Does It Take to Make a Scientific Discovery? In the year 1600, gnats and fleas were the smallest creatures known, and plagues were still unexplained and unstoppable natural disasters. By 1900, many of the parasitic microbes responsible for our deadliest diseases had been found, identifie...

About me
I taught science to elementary and middle school students for many years, and I am currently developing and marketing educational materials. My main focus right now is on astronomy, but I hope to eventually market complete science curricula.
Profile URL
https://reedsy.com/discovery/user/johnkrieger