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A quart of mucus a day keeps the heebies at bay: The lining of the human sinus normally produces about one quart of mucus every day. This mucus is thin and watery when the nose is healthy. The mucus drains out of the sinuses into the nose and from there runs down the back of the throat. Here it mixes with saliva and is swallowed. People with healthy noses and sinuses do not sense that they are swallowing a quart of nasal drainage every day.

Of men, mosquitos and stinky Dutch toe cheese: Researchers in Amsterdam found that sweaty feet and smelly Dutch cheese whet the appetites of malaria mosquitos. In a test involving people with washed and unwashed feet, malaria mosquitos showed a clear preference for the scent found on human feet. Furthermore, the Dutch etymologists discovered that these mosquitos were equally attracted to a piece of strongly-scented, ripe Dutch Limburger cheese. According to the scientists this makes sense because Limburger - a pungent, white, soft cheese - smells a lot like the 'toe cheese' found between human toes.

Sardinian Worm Cheese: This moving delicacy is known as casu marzu, which is Sardinian for "rotten cheese." It first happened, like many culinary treats, accidentally. Flies laid eggs inside the cheese mass left outdoors to ripen. The eggs hatched into myriad maggots that promoted fermentation. Mountain farmers produce sheep-milk cheese with worms in Northern Italy's Piedmont and Bergamo areas. But only on Sardinia has it acquired something of a cult following, and is considered an aphrodisiac.

Why do dogs eat their own poop? Many animals eat poop on a regular basis. These include rabbits, rodents, gorillas, many insects such as dung beetles and flies, and yes, dogs. (Keep that in mind the next time a dog wants to lick you!) Herbivores such as rabbits and rodents eat their own poop because their diet of plants is hard to digest efficiently, and they have to make two passes at it to get everything out of the meal. This is equivalent to a cow chewing its cud, only cows are able to re-eat their food without having to poop it out first. Another reason why animals eat poop is that poop contains vitamins produced by their intestinal bacteria. The animal is unable to absorb the vitamins through the intestinal wall, but can get at them by eating the poop.

Native American tobacco pipe grub beetle drilling method: Lengths of wood cut for pipe making were stood on end in oil from dried salmon until the oil had soaked through the pith from both ends. The bowl was then hollowed out and a little of the pith in the pipe stem and the grub of a little beetle which lives in the dried salmon was placed in the cavity and sealed in with pitch. The wood was then hung up in the living place and left for the grub to eat its way through the pith of the pipe stem. This trick was not always successful; sometimes the grub died without completing the job.

The dance of the salted slug: Ever pour salt on a garden slug and watch it melt? The reason they "melt" is because slugs depend on being very moist to survive, and if they lose that moisture they die. Salt is known for being very good at removing moisture from cells, so when you combine salt and slugs, you have a slug raisin. Mmmmm...slug raisins!