Scientific American reports on the horrifying ecosystem of old books:
Book scorpions are the best/worst thing to happen to books, because book scorpions! But also book scorpions…
Properly known as pseudoscorpions, these tiny, tiny creatures have a fondness for old books, because old books also happen to contain delicious booklice and dust mites. And they’re really not book scorpions… at all because they can’t hurt us, and they’ve basically been performing a free pest control service since humans started stacking excessive numbers of dusty, bound-together piles of paper along our walls and nightstands. This arrangement works because old book-makers used to bind books using a starch-based glue that booklice and dust mites love, so without a healthy population of book scorpions patrolling your collection, those gross parasites are probably having a horrible, silent field-day chewing them all apart.
(via Matt Staggs)