The Floating Petri Dishes Are Back

The cruise ship industry.

Photo by Vidar Nordli-Mathisen on Unsplash

What is a Petri dish? According to Wikipedia; “A Petri dish is a shallow transparent lidded dish that biologists use to hold growth medium in which cells can be cultured, originally, cells of bacteria, …”.

My definition of a cruse ship is: “A cruise ship is a floating steel city, fully enclosed and inhabited by humans holding growth…