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5 Reasons Parasites Are Beneficial to Earth
science.howstuffworks.com/environmental/green-science/5-reasons-parasites-beneficial.htm
You probably think all parasites are disgusting little critters, but that's not always the case. Several are actually critical to the planet.
How Stinger Missiles Work
science.howstuffworks.com/stinger.htm
The Stinger missile is a deadly man-portable air-defense system (MANPADS) that can be rapidly deployed by ground troops. It's lightweight, combat-proven and has a greater than 90 percent success rate. So how are Stingers used and against whom?
Do You Know the Meaning of These Medieval Words?
play.howstuffworks.com/quiz/do-you-know-the-meaning-of-these-medieval-words
Huzzah, serfs and vassals! If you know your bevor from your bodkin, we have a challenge for you. See if you can impress your friends at the Renaissance faire by acing this medieval words quiz!
5 September 11 Conspiracy Theories
people.howstuffworks.com/5-september-11th-conspiracies.htm
The confusion and terror following the Sept. 11 attacks on the World Trade Center left many searching for answers. Check out 5 September 11th conspiracy theories.
Who was the real Count Dracula?
history.howstuffworks.com/history-vs-myth/real-count-dracula.htm
The real Dracula dates back to the 15th century -- and the history of the real Dracula is pretty shocking. Read about the real Dracula and Bram Stoker's novel.
Project MKUltra: When the CIA Tested LSD on Unsuspecting Americans
history.howstuffworks.com/history-vs-myth/cia-lsd.htm
CIA obtained LSD for experimental purposes -- CIA operatives tested LSD on unsuspecting Americans in the 1950s. Read about the CIA and LSD in the 1950s.
How Spy Flies Will Work
science.howstuffworks.com/spy-fly.htm
Gathering reconnaissance during battle typically puts small teams of soldiers in harm's way. Tiny robotic flyers, called micro air vehicles (MAVs), could do away with this danger. Learn all about spy flies.
How Lasers Work
science.howstuffworks.com/laser.htm
Lasers are used in dental drills, eye surgery, tattoo removal, and (of course) laser pointers. Learn how different lasers generate such concentrated light.
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 Plague Works
science.howstuffworks.com/life/cellular-microscopic/plague.htm
You may be familiar with the medieval "Black Plague," but did you know that bouts of plague still break out today? Find out what causes an outbreak, why plague still exists and how the plague has influenced history.