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10 Innovations in Water Purification
science.howstuffworks.com/environmental/green-tech/sustainable/10-innovations-water-purification.htm
As far back as 1500 B.C.E., people were trying to purify water to make it drinkable. And we're still at it. Today inventors use tools as simple as clay and as sophisticated as carbon nanotubes to bring clean water to the world.
How College Admissions Tests Work
money.howstuffworks.com/personal-finance/college-planning/admissions/college-admissions-test.htm
College admissions tests, such as the SAT and ACT are explained in this article from HowStuffWorks. Learn about college admissions tests.
How the Prosperity Gospel Works
people.howstuffworks.com/prosperity-gospel.htm
The prosperity gospel is one of the most popular forms of Christianity in the entire world. But where did it come from and how did it get so big? And why do critics say it gives a false picture of Christianity?
How Midterm Elections Work
people.howstuffworks.com/midterm-elections.htm
Midterm elections in the U.S. don't get the public excited the way presidential elections do. But there's a lot at stake, actually, during these contests. Why do midterms exist, anyway?
10 UAV Jobs of the Future
money.howstuffworks.com/10-uav-jobs-future.htm
Unmanned aerial vehicles (UAV) were originally developed for the military, but there are many civilian uses as well. See 10 UAV jobs to learn more.
Pearl Harbor Attack: What Led to It and What Was the Aftermath?
history.howstuffworks.com/world-war-ii/japan-bombs-pearl-harbor.htm
Japan's bombing of Pearl Harbor was the major event that caused the United States to enter World War II. Learn about the attack only at HowStuffWorks.
How Cell-phone Radiation Works
electronics.howstuffworks.com/cell-phone-radiation.htm
Cell-phone radiation has been debated for years now. Find out what the buzz is about and how to protect yourself when choosing and using a cell phone.
How Sourdough Bread Works
science.howstuffworks.com/innovation/edible-innovations/sourdough.htm
Sourdough bread tastes great, but have you ever thought about it as a technology??? Learn how this technology works!
How Fat Cells Work
science.howstuffworks.com/life/cellular-microscopic/fat-cell.htm
Fat cells lie behind how you gain and lose weight. Learn about fat cells, body fat basics, how fat is stored in the body and how the body breaks down fat.
Do I really need a digital converter box for my TV?
electronics.howstuffworks.com/digital-converter-box.htm
A digital converter box will soon be required for TVs that aren't connected to digital cable. Find out if you'll need a digital converter box.