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What is in moth balls? Is it harmful to people?
home.howstuffworks.com/home-improvement/household-hints-tips/cleaning-organizing/question210.htm
Moth balls use fumes to kill moths and moth larvae. Learn more about moth balls and find out what the main active ingredient is in moth balls.
Fire Extinguisher Inspection 101
home.howstuffworks.com/home-improvement/household-safety/how-to-inspect-co2-fire-extinguisher.htm
You need to inspect a CO2 fire extinguisher, but you're not sure how to do it. Learn about how to inspect a CO2 fire extinguisher in this article.
The History of the Sandwich
recipes.howstuffworks.com/history-sandwich.htm
Are you wondering about the history of the sandwich? Learn about the history of the sandwich in this article.
Why Don't You Ever See Square Vegetables?
science.howstuffworks.com/life/genetic/close-are-to-growing-square-tomato.htm
At least not in nature. Scientists have discovered the two gene families that play key roles in making fruits and vegetables either round or long. Could a square fruit be on the horizon?
What if Earth changed its orbit?
science.howstuffworks.com/science-vs-myth/what-if/what-if-earth-changed-its-orbit.htm
Our planet's path around the sun defines life on Earth. What would happen if it changed?
Blue Crab: A Savory Beauty and Maryland Staple
animals.howstuffworks.com/marine-life/blue-crab.htm
The blue crab is one of the most recognizable crustaceans in the coastal waters of the Atlantic and Gulf coasts. Found in the Chesapeake Bay, the blue crab plays a crucial role in marine science and fisheries.
How Direct Injection Engines Work
auto.howstuffworks.com/direct-injection-engine.htm
Direct injection engines offer high efficiency and performance. Learn how direct injection engines work at HowStuffWorks.
How Plasma Converters Work
science.howstuffworks.com/environmental/energy/plasma-converter.htm
Plasma converters generate electricity for our homes by burning trash. Learn about plasma converters and see pictures of plasma converters plants.
How Food Works
science.howstuffworks.com/innovation/edible-innovations/food.htm
Ever wonder what, exactly, you are putting in your body when you eat? Would you like to know the real difference between a "fat" and a "carb"? Learn all about food and how your body uses it!
Ultimate Guide to Elmo
lifestyle.howstuffworks.com/family/activities/how-elmo-works.htm
Elmo, the furry red Muppet on 'Sesame Street,' is the most recognized children's character in the United States. Read this in-depth look at Elmo.