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Lapis Lazuli: Crystal Properties, Origins and Uses
science.howstuffworks.com/environmental/earth/geology/lapis-lazuli.htm
This ancient rock adorns King Tut's coffin and the Sistine Chapel. And at one time it was more precious than gold. What is it about this deep blue rock that has drawn us in for centuries?
Scientists Discover Something Mind-blowing About How Usain Bolt Runs
health.howstuffworks.com/human-body/parts/uain-bolt-legs-asymmetrical-uneven-stride.htm
What is unique about the way Usain Bolt runs? Learn more about a new scientific study of Usain Bolt's stride in this HowStuffWorks artlcle.
Why Do People Find Leaf Blowers So Irritating?
health.howstuffworks.com/wellness/why-do-people-find-leaf-blowers-so-irritating.htm
Sure, leaf blowers are noisy, but do they cause other health effects? Learn more at HowStuffWorks.
Test Your Knowledge: Defensive Military Tactics
play.howstuffworks.com/quiz/defensive-military-tactics-quiz
In an armed conflict, sometimes your best course of action is to defend a stronghold instead of going on the offensive. How much do you know about defensive military tactics? Take this quiz to find out!
The Rockin' AC/DC Quiz
play.howstuffworks.com/quiz/acdc-quiz
AC/DC has sold millions of albums and continues to tour after more than four decades in the spotlight. Take our quiz to see how much you really know about this legendary band.
5 Fast Facts About Underarm Rashes
health.howstuffworks.com/skin-care/underarm-care/problems/5-fast-facts-about-underarm-rashes.htm
5 facts about underarm rashes are explained in this article. learn about underarm rashes and how to treat them.
What grade of steel was used in the World Trade Center?
science.howstuffworks.com/engineering/structural/grade-of-steel-used-in-world-trade-center.htm
The materials used to build the World Trade Center's twin towers have been heavily scrutinized since the 9/11 terrorist attacks -- including the steel that formed the frames of the skyscrapers.
5 Home Remedies for Dehydration
health.howstuffworks.com/wellness/natural-medicine/home-remedies/5-home-remedies-for-dehydration.htm
Need some remedies for dehydration? Learn the home remedies that will keep you from becoming dehydrated.
Contextualizing the Assassination of Archduke Franz Ferdinand
history.howstuffworks.com/historical-events/assassination-of-archduke-franz-ferdinand.htm
Sometimes, history can seem to pivot on a single event. While the underlying causes were numerous, historians generally accept that the assassination of Archduke Franz Ferdinand was the most significant single inciting act of World War I.
Tiger: A Lone Hunter and Apex Predator
animals.howstuffworks.com/mammals/tiger.htm
Tigers, scientifically known as Panthera tigris, have striking orange coats, black stripes and piercing eyes. Like other big cats, tigers are at risk. Tiger populations occupy about 5 percent of their historical range, making conservation necessary.