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How Does Herd Immunity Keep a Country Safe From Diseases?

science.howstuffworks.com/life/cellular-microscopic/herd-immunity.htm

Herd immunity relies on the principle of safety in numbers as far as vaccinations go. Find out why herd immunity is an important public health issue.

How Winemaking Works

science.howstuffworks.com/innovation/edible-innovations/winemaking.htm

From Beaujolais to Bordeaux, Madeira to Merlot and Sancerre to Shiraz, wine can complement almost any food. And, one glass of red wine daily may be a heart-healthy habit. Learn how wine is made, from grapes to glass!

10 Home Remedies for Dry Hair

health.howstuffworks.com/wellness/natural-medicine/home-remedies/home-remedies-for-dry-hair.htm

Learn several effective home remedies for dry hair, everything from ways to wash and dry to spa treatments using items from your refrigerator.

What's sarcopenia and what can you do about it?

health.howstuffworks.com/wellness/aging/aging-process/sarcopenia.htm

Sarcopenia is the loss of muscle mass and coordination that results from the process of aging. See the causes of sarcopenia and how it can be avoided.

Can You Answer These Agriculture Questions a Farmer Should Know?

play.howstuffworks.com/quiz/can-you-answer-these-agriculture-questions-a-farmer-should-know

Folks sick of the daily grind might think a career switch is in order -- with many turning to farming as a way to get back to nature and slow down. While farming can be lucrative, it also requires plenty of hard work and dedication. Think you've got what it takes? Test your agriculture knowledge with this quiz!

What Is Citric Acid, and Is It Safe?

recipes.howstuffworks.com/food-science/citric-acid.htm

HowStuffWorks finds out what citric acid is, how it is made and whether or not it is safe.

How Many Muscles Does It Take to Smile?

science.howstuffworks.com/life/inside-the-mind/emotions/muscles-smile.htm

The authors of chain emails often tell you to smile more, with the added claim that it takes more muscles to frown. Ever questioned this piece of wisdom? We have an answer for you.

7 Natural Hangover Cures that Work

health.howstuffworks.com/wellness/natural-medicine/home-remedies/natural-hangover-cures.htm

From someone who has tested them all and found hangover relief. Learn more about these 7 natural hangover cures that work.

How to Coach Your Own Child

entertainment.howstuffworks.com/sports/youth-coaching/coach-your-own-child.htm

Need to know how to coach your own child? Visit HowStuffWorks to learn how to coach your own child.

Frances Kelsey Stopped Thalidomide in Its Tracks, and Changed the FDA Forever

history.howstuffworks.com/historical-figures/frances-kelsey-thalidomide.htm

Frances Kelsey saved countless lives when she decided not to approve a drug for morning sickness in the 1960s. Her instinct was spot-on and has had lasting effects on FDA drug approval ever since.

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