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How does the sense of smell work?
health.howstuffworks.com/mental-health/human-nature/perception/question139.htm
What causes smell? When I walk into a bakery, I smell the bread. What actually has happened? Do objects give off pieces of matter? What has entered my nose to cause the sensation of smell?
What is an appendix and what causes appendicitis?
health.howstuffworks.com/human-body/parts/question141.htm
What is an appendix and why can it be removed without causing a problem?
How does a frost-free refrigerator work?
home.howstuffworks.com/question144.htm
If you have an old refrigerator, you know about the frost that forms around the coils that cool the freezer. Learn how newer ones keep frost away.
How Does a Blood Pressure Gauge Work?
science.howstuffworks.com/innovation/everyday-innovations/question146.htm
It's technical name is sphygmomanometer and it takes your blood pressure. But how does it do that?
What are homogenization and pasteurization?
recipes.howstuffworks.com/question147.htm
When I buy milk at the store, the label says "homogenized pasteurized milk." What are homogenization and pasteurization?
Can Flour Explode?
recipes.howstuffworks.com/tools-and-techniques/question150.htm
Is flour inflammable? I heard that if you were to burn flour it would explode. If so, what is in flour that makes this happen?
How does a halogen light bulb work?
home.howstuffworks.com/question151.htm
A halogen light bulb is slightly different from a regular light bulb. Find out what makes a halogen light bulb different and how a halogen lamp works.
How do they make the ice at an ice skating rink?
entertainment.howstuffworks.com/question152.htm
How do they make the ice at an ice skating rink? And how do they get the lines and the logos into the ice for a hockey game?
What is plywood? Why do people use it so much? What about oriented strand board (OSB)?
home.howstuffworks.com/home-improvement/remodeling/question154.htm
What is plywood? Why do people use it so much? What about oriented strand board (OSB)?
How Much Water Is on Earth?
science.howstuffworks.com/environmental/earth/geophysics/question157.htm
Water is one of the most abundant substances on the planet. About 70 percent of our planet is covered by oceans, but just how much water is there on Earth?