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What are the physical effects of stress?
health.howstuffworks.com/wellness/stress-management/physical-effects-of-stress.htm
The physical effects of stress go beyond what you might think. Headaches, diarrhea, backaches -- find out more about the physical effects of stress.
10 Beatles Singles
entertainment.howstuffworks.com/10-beatles-singles.htm
For a week in 1964, the Beatles had 12 songs on Billboard's Hot 100. See our list of the Beatles' top singles.
Is humid air heavier than dry air?
science.howstuffworks.com/nature/climate-weather/atmospheric/is-humid-air-heavier-than-dry-air.htm
If humid air is just air plus water, then it has to be heavier than dry air, right? Sure, if it was only a matter of simple addition, but molecular physics is a lot like a bouncer at a club: Nothing gets in unless something else goes out.
How Prenatal Testing Works
health.howstuffworks.com/pregnancy-and-parenting/pregnancy/issues/prenatal-testing.htm
During a pregnancy, different kinds of prenatal testing are an important part of the process. See how prenatal testing protects both the mother and child.
How IEDs Work
science.howstuffworks.com/ied.htm
IEDs (improvised explosive devices) are simple to make, easily hidden and very destructive. Read why IEDs are the weapon of choice for some fighters.
How Brake Lines Work
auto.howstuffworks.com/auto-parts/brakes/brake-parts/brake-lines.htm
Brake lines are tubes that carry brake fluid between brake components. Learn all about brake lines at HowStuffWorks.
How Emergency Rooms Work
people.howstuffworks.com/emergency-room.htm
Movies and TV shows depict emergency rooms as insanely intense places. But do you want to know what an emergency department in a hospital is really like? Learn all about what goes on in a real-life ER.
How Pain Works
science.howstuffworks.com/life/inside-the-mind/human-brain/pain.htm
Pain is the most common reason people seek medical attention. But what actually is pain? How do you sense it? Learn how pain and pain perception work.
How Olympic Torches Work
entertainment.howstuffworks.com/olympic-torch.htm
Every two years, the Olympic torch makes its way through a huge relay to the Opening Ceremony that kicks off the Olympic Games. Learn all about the torch's history, construction and transport.
What does epinephrine do for anaphylaxis?
Do you know what epinephrine does for anaphylaxis? Find out what epinephrine does for anaphylaxis in this article from HowStuffWorks.