PUSD Science Fest, Pasadena, CA (2025)

10/08/2025

PUSD ScienceFest 2026
March 7th 2026
Mark your calendar NOW!

09/17/2025

Whether we know it or not, microbes are an essential part of everyday life. From health, to food, to the environment, microbes have a role and are highlighted and celebrated on International Microorganism Day on 17 September each year.

Antonie van Leeuwenhoek – a Dutch merchant with no fortune or university degree - sent a letter to the Royal Society of London in 1683, with the first description of a single-celled organism. The date was September 17, the day that since 2017 was chosen to celebrate the International Microorganism Day.

This improbable scientist displayed infinite curiosity, being a patient and tireless worker, gifted with extraordinary power of observation. He built and developed his own microscopes (hundreds of them!), perfecting the lenses of his optical system and thus making it possible to obtain extraordinary amplifications, well ahead of his time, and to observe and describe, for the first time, microorganisms.

In this famous letter, an exquisite description was made of the first observation of living bacteria present on dental plaque, which was accompanied by drawings of the microorganisms observed and their movements. Finally reaching microscopic life, the foundations of Microbiology were laid.

Address

Pasadena, CA

Website

https://www.pusdsciencefest.org/

Alerts

Be the first to know and let us send you an email when PUSD Science Fest posts news and promotions. Your email address will not be used for any other purpose, and you can unsubscribe at any time.

Contact The Practice

Send a message to PUSD Science Fest:

PUSD Science Fest