High blood pressure -- or hypertension -- is elevated pressure of the blood in the arteries. Hypertension results from two major factors. Check out our HowStuffWorks article to learn more about the causes of and treatment for hypertension.
Millions of people across the world enjoy scuba diving -- and, unbelievably enough, a few pets have also taken up this hobby. Check out our HowStuffWorks article to learn more about how a cat's devotion to her best friend got her underwater.
In May of 2007, the US military found drawings believed to be part of an Al-Qaida torture manual. However, the seminal manuals on torture are believed to be the work of the CIA. Check out our HowStuffWorks article to learn more about torture manuals.
The 1996 Chuck Palahniuk novel, "Fight Club," has been blamed -- and lauded -- by various groups for inspiring several real-life fight clubs. Take a look at our HowStuffWorks article to learn more about real-life fight clubs.
In 1995, World Bank vice president Ismail Serageldin declared that "the wars of the next century will be about water." Check out our HowStuffWorks article to learn what happens once we run out of water.
Fair chase is the idea that a balance should be struck between the hunter's ability to kill prey and the prey's ability escape. Take a look at our HowStuffWorks article to learn more about knife hunting, and whether or not it's the fairest way to hunt.
Blushing from embarrassment is governed by the sympathetic nervous system, which governs involuntary processes. Although we know how people blush, we still don't understand why. Check out the theories of blushing in our HowStuffWorks article.
Carbon capture is the process of trapping carbon emissions and storing them away from the atmosphere to prevent global warming. Check out our carbon capture article at HowStuffWorks.com to learn more about the possibility of reducing carbon emissions.