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How Your Immune System Works
health.howstuffworks.com/human-body/systems/immune/immune-system.htm
Inside your body there is a mechanism designed to defend you from millions of bacteria, microbes, viruses, toxins and parasites that want to invade your body. Find out how the human immune system works.
10 Outrageous Experiments Conducted on Humans
Some truly bizarre and troubling things have been done through the ages in the quest for scientific knowledge. The 10 experiments on this list all made humans into lab rats.
What are some cigarette allergy symptoms?
health.howstuffworks.com/diseases-conditions/allergies/allergy-basics/cigarette-allergy-symptoms.htm
Rarely, people are allergic to tobacco plants. Learn about cigarette allergy symptoms in this article.
What are some dust allergy symptoms?
health.howstuffworks.com/diseases-conditions/allergies/indoor-allergies/dust-allergy-symptoms.htm
Dust allergies can be caused by dust mites, animal dander or fungus. Learn about dust allergy symptoms in this article.
How Poetry Works
entertainment.howstuffworks.com/arts/literature/poetry.htm
Poetry is one of the oldest art forms in existence. Visit HowStuffWorks to learn the ins and outs of poetry.
10 Scientific Questions We Can't Answer Yet
science.howstuffworks.com/innovation/scientific-experiments/10-questions-science-cant-answer-yet.htm
Science is forever uncovering the mysteries of our universe, but some questions remain elusive. What topics have us still scratching our heads?
10 Pieces of Disaster Safety Advice You Should Ignore
There are certain steps you should take to protect yourself, your family and your home during a disaster. These are not those steps.
How Restaurant Pagers Work
electronics.howstuffworks.com/everyday-tech/restaurant-pager.htm
You've probably used a restaurant pager, but have you taken one apart? We have -- see how a restaurant pager works.
How Luminol Works
science.howstuffworks.com/luminol.htm
Have you seen investigators on crime shows who spray some stuff on a "clean" carpet and suddenly -- blood stains! Well, of all the fictional technology on TV, it turns out this stuff is real! Find out how luminol reveals the blood.