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What Are the 17 Symptoms of PTSD?
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Post-traumatic stress disorder was first described by a doctor treating patients during the Civil War. Learn about post-traumatic stress disorder.
28 Industrial Revolution Inventions That Shaped Our World
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Many inventions during the Industrial Revolution caused Europeans and Americans to move from an agricultural economy to an industrial one and changed the world forever. What were the top 10?
How DNA Evidence Works
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DNA evidence is explained in this article from HowStuffWorks. Learn about DNA evidence.
How Sororities Work
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Sororities are social organizations that are made up of women enrolled in college. Learn about sororities and find out why sororities were created.
How Nuclear Bombs Work
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Nine countries hold the 13,000 nuclear weapons in the global stockpile. That's less than during the Cold War but it doesn't change the fact that these bombs are still a threat to global humanity. So how do they work and are we close to nuclear war?
10 Real Events That Sound Just Like Horror Movies
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Real-life events are sometimes just as scary as horror films. Learn about 10 true horrors at HowStuffWorks.
10 Scary Modern Technologies
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Some of our modern technologies can be a little scary. Take a look at 10 modern scary technologies, including computers taking over the world.
2008 in Pictures
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The year 2008 in pictures includes everything from newsmakers like Robert Mugabe and Michael Phelps to events like the Myanmar cyclone. See 2008 in pictures.
Can laughter cure illness?
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Can laughter cure illness? Find out if laughter can cure illness at HowStuffWorks.
How Numbers Stations Work
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We may be living in the age of the Internet, but simple shortwave radio transmitters still play a part in the espionage game. The huge benefit: There's no trail.