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Quiz: What's the difference between flu and a cold?
health.howstuffworks.com/diseases-conditions/cold-flu/flu-cold-quiz.htm
Take this HowStuffWorks quiz to test your cold versus flu IQ!
What's the Difference Between Cake Flour and All-purpose Flour?
recipes.howstuffworks.com/tools-and-techniques/difference-between-cake-flour-all-purpose-flour.htm
Don't know your cake flour from all-purpose? The difference is subtle but the end result is huge.
What is gray water, and can it solve the global water crisis?
home.howstuffworks.com/green-living/gray-water.htm
Gray water is all of the wastewater that comes from your washer, sinks, bathtub or shower. Learn about gray water and how gray water can be recycled.
What is optical audio?
electronics.howstuffworks.com/gadgets/audio-music/optical-audio.htm
Optical audio offers a new way to send audio and video from your gear to your ear. Learn how optical audio works.
What's the No. 1 reason people go into debt?
money.howstuffworks.com/personal-finance/debt-management/reason-people-go-into-debt.htm
The number one reason people go into debt explained by HowStuffWorks.com. Find out the number one reason why people go into debt in the article.
What Is Radar?
science.howstuffworks.com/radar.htm
Radar is used to track storms, planes, and weapons and also to create topographic maps. Learn about radar, radar technology and Doppler shift.
Coke Zero's Formula Is Changing. What Could Go Wrong?
recipes.howstuffworks.com/coke-zero-formula-change-news.htm
Coca-Cola decided to change the recipe of its popular Coke Zero to make it taste more like the regular version. But fans are already up in arms. Dare we say another New Coke?
What tax credits exist for disabled persons?
money.howstuffworks.com/personal-finance/personal-income-taxes/disability-tax-credit.htm
Disability tax credits are available to disabled persons and those who care for them. Learn more about disability tax credits.
What Is a Punnett Square?
science.howstuffworks.com/life/genetic/punnett-square.htm
A Punnett square helps predict the possible ways an organism will express certain genetic traits, such as purple flowers or blue eyes.
What's social media depression -- and might I have it?
health.howstuffworks.com/mental-health/depression/questions/social-media-depression.htm
Social media depression can be triggered by spending too much time online following other people's lives. See if you have social media depression.