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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.
Are air fresheners bad for your health?
home.howstuffworks.com/home-improvement/household-safety/air-freshener-dangers.htm
Air freshener dangers? How could something that's simply supposed to freshen the scent in the air be dangerous. Learn about air freshener dangers.
Can New York City's Skyscrapers Accommodate Vertical Farming?
science.howstuffworks.com/environmental/conservation/issues/vertical-farming.htm
Vertical farming is a method of large-scale farming in an urban environment. Learn about the benefits of a vertical farm and vertical farming technology.
How Roller Derby Works
entertainment.howstuffworks.com/roller-derby.htm
Roller derby is roller skating on steroids. Find out how women's roller derby has evolved, how a roller derby bout works and how to train for roller derby.
What causes halitosis?
health.howstuffworks.com/wellness/oral-care/problems/halitosis.htm
Halitosis is a fancy term for bad breath -- no matter what you call it, no one wants it! Learn about halitosis and how to target what's causing bad breath.
Hyponatremia Explained
health.howstuffworks.com/wellness/men/sweating-odor/hyponatremia.htm
Hyponatremia is a serious medical condition. Visit Discovery Health to learn all about hyponatremia.
10 Reasons to Start a Trust
money.howstuffworks.com/personal-finance/financial-planning/10-reasons-to-start-a-trust.htm
While trust funds, or trusts, may seem the province of the wealthy, there are actually many benefits to creating one, even if you're not a multimillionaire.
10 Outrageous Experiments Conducted on Humans
Some truly bizarre and troubling things have been done through the ages in the quest for scientific knowledge. The 10 experiments on this list all made humans into lab rats.
Did Humans Evolve From Monkeys? Human Evolution Explained
science.howstuffworks.com/life/evolution/humans-descended-from-apes.htm
Since Charles Darwin published the theory of evolution by means of natural selection, myths and misinterpretations have eroded public understanding of his ideas. Ready to take another look at one of the related questions that just won't die?
How to Prepare Soil for Planting
home.howstuffworks.com/gardening/garden-design/how-to-prepare-soil-for-planting.htm
Good soil is the first step to a great garden. Learn how to make the most out of the soil in your area by following the tips in this article.