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Why Do Bruises Change Colors as They Heal?
It's super weird that a bruise changes from deep purple to green to yellow during the healing process. HowStuffWorks looks into this strange process.
A Nation Divided: Civil War Quiz
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Although it ended more than a century ago, the scars of the Civil War are still with Americans today. Think you know more than the average Billy Yank or Johnny Reb about the blood and politics behind the war? Find out by taking our Civil War quiz.
Can You Get More Than 11 Right on This Difficult Nursing Quiz?
play.howstuffworks.com/quiz/can-you-get-more-than-11-right-on-this-difficult-nursing-quiz
Nurses have incredibly difficult and important jobs. From administering medicine to caring for patients, nurses have a lot of responsibilities. But how much do you know about what they do and have to know? Stay calm, slow your breathing and get ready to take on our challenging nursing quiz.
The Basics of Qi
health.howstuffworks.com/wellness/natural-medicine/chinese/qi.htm
Qi ("chee") is one of the vital substances of traditional Chinese medicine. Learn more about this life force and the role it plays in your health.
Chimerism: You Can Be Your Own Twin
science.howstuffworks.com/life/genetic/chimerism-be-own-twin.htm
Tetragametic chimerism occurs when a single organism has two genetically distinct types of DNA.
How Your Immune System Works
health.howstuffworks.com/human-body/systems/immune/immune-system.htm
Inside your body there is a mechanism designed to defend you from millions of bacteria, microbes, viruses, toxins and parasites that want to invade your body. Find out how the human immune system works.
Can You Answer These Basic Nursing Questions?
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If it weren't for nurses, no doctor's office or hospital would still be running. That's why these nursing questions are so vital, but can you answer them all correctly?
Varicose Veins Causes and Treatments
health.howstuffworks.com/skin-care/problems/beauty/varicose-veins.htm
Varicose veins are a common beauty skin problem. Learn about how varicose veins work at HowStuffWorks.
Baking Soda in Laundry: Level Up Your Clothing Care
home.howstuffworks.com/uses-for-baking-soda-clothing-care-ga.htm
Did part of your lunch end up on your shirt? No problem, it's baking soda to the rescue! You've probably heard about this miracle-working powder, but you'll probably be surprised by just how many things it can do.
Who's Your Daddy? The History of Paternity Testing
science.howstuffworks.com/life/genetic/history-paternity-testing.htm
Before the widespread use of DNA, establishing the paternity of a child was a tricky business. Ever heard of the oscillophore?