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The Petri Dish

Five Hundred!

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the_petri_dish Creator

The Petri Dish turns six years old AND we've reached the 500th comic at the same time! To celebrate, I'm having a contest! Send me an email at and tell me your FAVOURITE thing about the Petri Dish. The person with the best entry will win a free copy of my latest book: "Stand Back, I'm Doing a Science!" Contest closes January 20th. Flattery will get you everywhere!