Days Off

After two weeks, it's time to pop the hood on the worm bin and fiddle a bit with their world. Remember Biosphere 2? It was a sprawling structure built in the Arizona desert, designed to be an enclosed, artificial self-contained ecosystem for eight human inhabitants. Unfortunately, the complex miniature ecological zones inside it failed to establish a self-sustaining homeostasis, and oxygen levels fell below tolerable levels. Scientists monitoring the experiment were forced to inject fresh oxygen into the system periodically. That project cost millions of dollars, so we felt no shame in breaking open our worms' $25 biosphere for some godlike tinkering.

For some reason, every time we film anything about the worm bin, our dog gets ill.