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Black Crystal Meaning for Energy Protection and Emotional Healing
science.howstuffworks.com/science-vs-myth/everyday-myths/black-crystal-meaning.htm
The surprising truth about black crystals: they're not just for banishing negativity. Discover why these powerful stones were used in ancient mystery schools, how they connect to the void between dimensions, and which black crystal holds the strongest grounding energy on Earth.
How the F15 Works
science.howstuffworks.com/f-15.htm
Floats like a butterfly and stings like a bee -- the F-15 is the Muhammad Ali of the skies. The military has been using this fighter jet since the '70s, and it still outmaneuvers the competition. Find out why this plane has a perfect combat record.
How Bats Work
animals.howstuffworks.com/mammals/bat.htm
Bats are the only mammals that can fly, and they live much of their lives hanging upside down. Learn about bat wings, bats and echolocation, bat caves and bat myths.
How Prison Telecommunications Work
people.howstuffworks.com/prison-telecommunication.htm
Prison telecommunications is tricky business when there's a risk prisoners will use telephone calls to commit crimes. Learn about prison telecommunications.
Headaches 101
health.howstuffworks.com/diseases-conditions/headache/headache.htm
Headaches are a frequent pain (literally) for many. What causes headaches, and can they be prevented? Are primary or secondary headaches more dangerous?
How College Rankings Work
money.howstuffworks.com/personal-finance/college-planning/admissions/college-ranking.htm
College rankings can be useful in selecting a college, but are these college rankings accurate? Can they be trusted? Read more about college rankings.
How to Play Video Poker
entertainment.howstuffworks.com/how-to-play-video-poker.htm
Video poker adds something slot machines don't have -- an element of skill. Learn how to play video poker.
How Municipal WiFi Works
computer.howstuffworks.com/municipal-wifi.htm
Learn about the amazing things that municipal wireless networks can do -- besides potentially providing free or cheap Internet access.
How Cell-phone Implants Work
electronics.howstuffworks.com/cell-phone-implant.htm
But even though they're a lot smaller than they used to be, modern cell phones are still far to big to fit inside your body. Learn how developers have modified existing cell phone designs to create a complete, working cell-phone implant.
How Chess Works
entertainment.howstuffworks.com/leisure/brain-games/chess.htm
Chess is considered to be the greatest strategy game of all time. Visit HowStuffWorks to learn all about chess.