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How Scanners Work
computer.howstuffworks.com/scanner.htm
Before the digital camera explosion, flatbed scanners were the way to get images into a PC and online. These devices turn images on paper into data you can access on a computer. Find out how scanners analyze, process and transfer images.
What can your spit tell you about your DNA?
science.howstuffworks.com/life/genetic/spit-dna.htm
Doctors always want your blood, but one day, a health care professional may ask you to open up and say, "Ptooey!" Why? Your spit holds a mother lode of biological information.
Can you test your fertility at home?
health.howstuffworks.com/pregnancy-and-parenting/pregnancy/fertility/test-your-fertility-at-home.htm
Can you test your fertility at home? Visit Discovery Fit & Health to learn if you can test your fertility at home.
What Is an Isotope?
science.howstuffworks.com/isotopes.htm
You don't need to be a fan of chemistry to appreciate isotopes. They affect geology and medicine, too.
Rhodium: Earth's Rarest and Most Expensive Precious Metal
science.howstuffworks.com/rhodium.htm
Discovered in the early 1800s from a chunk of smuggled platinum ore, rhodium is the most valuable precious metal on the planet today, used mainly for keeping car emissions in check.
Is Polio Back? Here's What You Need to Know
health.howstuffworks.com/diseases-conditions/infectious/polio-resurgence-news.htm
Is polio making a comeback in the United States and, if so, are you at risk? We talk to a doctor, who says that vaccination is key.
10 Reasons You Should Host a Potluck
recipes.howstuffworks.com/menus/10-reasons-you-should-host-a-potluck.htm
Are you looking for some reasons you should host a potluck? Then check out these 10 reasons you should host a potluck.
GLOBE Wants You as a Citizen Scientist
money.howstuffworks.com/economics/volunteer/information/citizen-science.htm
Citizen science allows virtually anyone to collect and analyze date about the Earth. GLOBE wants you to become its citizen scientist.
Tattoos May Be Good for Your Health
health.howstuffworks.com/skin-care/beauty/skin-and-lifestyle/tattoos-may-be-good-your-health.htm
Having a lot of tattoos could mean you have a healthy immune system. HowStuffWorks Now explains why.
Can something smell like sunshine?
science.howstuffworks.com/science-vs-myth/everyday-myths/can-something-smell-like-sunshine.htm
Picture the smells of a warm, sunny day in July. To your left, a neighbor is barbecuing. To your right, someone has put a warm apple pie on the windowsill to cool down. Smells great, right? So how does sunshine factor into all of this?