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Why Don't All Food Cans Have Pull Tabs?
money.howstuffworks.com/food-cans-pull-tabs.htm
You can open a can with a can opener, but a can with a pull tab is even easier to open. So, why don't more cans come with pull tabs?
How Often Should You Wash Your Bra?
While laywomen give answers ranging from "after every use" to "once a month," experts have a definite number.
Who Brushes Their Teeth in the Shower?
health.howstuffworks.com/wellness/oral-care/products/who-brushes-teeth-in-shower.htm
A surprising number of people do, but why? And are there any downsides to doing it?
A Very Special Yellow Butterfly: The Eastern Tiger Swallowtail
animals.howstuffworks.com/insects/yellow-butterfly.htm
The yellow butterfly gives other insects a masterclass in adaptation, camouflage and transformation. One yellow butterfly in particular stands out: the eastern tiger swallowtail.
How Special Relativity Works
science.howstuffworks.com/science-vs-myth/everyday-myths/relativity.htm
Special relativity deals in phenomena that don't agree with our historical or commonsense views of how the universe works. In fact, many of the theory's assertions almost appear ludicrous.
How Do They Make Hollow Chocolate Easter Rabbits?
recipes.howstuffworks.com/menus/question364.htm
You might love eating those hollow chocolate Easter bunnies, but do you know how they make hollow chocolate? And no, the Easter Bunny doesn't do it.
How much sugar do they really put in soft drinks?
recipes.howstuffworks.com/question370.htm
You know soda pop isn't the greatest drink to consume, but do you know how much sugar they really put in soft drinks? Learn about soft drink sugar.
VIA Rail Canada
history.howstuffworks.com/historical-events/via-rail-canada.htm
VIA Rail Canada is a train service that was built to mirror Amtrak's system. Learn more about the VIA Rail Canada railroad system.
How do the engines breathe in diesel submarines?
science.howstuffworks.com/transport/engines-equipment/question286.htm
How do the engines breathe in diesel submarines? Don't internal combustion engines need a lot of oxygen to run? Where would all of this oxygen come from when the sub is underwater?
What makes adhesives sticky?
home.howstuffworks.com/adhesives-sticky.htm
Used in a variety of everyday applications, adhesives come in many forms, including glue, tape and sealant. Learn more about what makes adhesives sticky from this article.