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Your search for "persist" returned 1,028 results
Sand Is in Such High Demand, People Are Stealing Tons of It
As the world becomes more urbanized, the demand for sand, a key ingredient of concrete, keeps growing. But there's only so much sand to go around.
When Irish Immigrants Weren't Considered 'White'
history.howstuffworks.com/historical-events/when-irish-immigrants-werent-considered-white.htm
How were early Irish immigrants treated in the United States of the mid-19th century? Learn more in this HowStuffWorks article.
When Sound Makes You Sick
health.howstuffworks.com/human-body/systems/ear/when-sound-makes-you-sick.htm
There's growing evidence that sound can cause a range of health problems. HowStuffWorks looks at the science.
Big Families vs. Small Families: A Matter of Quantity vs. Quality?
A new study finds that kids in larger families may have more to worry about than simply dealing with hand-me-downs. Learn more at HowStuffWorks Now.
What's the Difference Between Pyrite and Gold?
science.howstuffworks.com/pyrite.htm
Don't know your fool's gold from the real deal? We'll tell you how to tell what's pyrite (aka fool's gold) and the good ol' 24 karat stuff you want.
It's Gardening Season: 5 Tips to Keep Squirrels Out
animals.howstuffworks.com/mammals/5-tips-to-keep-squirrels-out.htm
Squirrels aren't going anywhere. HowStuffWorks looks at how gardeners and these pesky critters can get along peacefully, in the same yard.
Why is it bad luck to spill salt?
people.howstuffworks.com/why-is-it-bad-luck-to-spill-salt.htm
If you spill some salt while you're cooking, you might fear a wave of oncoming bad luck. Why is toppling over some salt an omen of misfortune?
Why Is It Bad Luck to Cheers With Water or an Empty Glass?
people.howstuffworks.com/why-is-it-bad-luck-to-toast-with-empty-glass.htm
Toasting is an important part of many celebrations. Learn why it's bad luck to toast with water or an empty glass at HowStuffWorks.
How to Tell Someone They Sound Racist
people.howstuffworks.com/how-to-tell-someone-sound-racist.htm
Not speaking up when witnessing racism sends a message that racism is OK. Learn how to tell someone they sound racist.
How do we measure pain?
science.howstuffworks.com/life/inside-the-mind/human-brain/measure-pain.htm
Pain is subjective - what is excruciating to you might be tolerable to me. Which is why it's so difficult to measure and control.