I found the source of all those drain flies at the place I volunteer! Kind of glad we are moving to a new facility soon. In the meantime... time for some bleach and a good flushing out with many gallons of water!

Gross as this is, it is pretty amazing how there are creatures able to live in virtually every spot on Earth, from sewers, to the deepest parts of the sea, to scorching hot geothermal vents, to mineshafts miles underground, to way up in the stratosphere.

For more on these creepy crawlies:
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