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How Does a Positive Crankcase Ventilation (PCV) System Work?
auto.howstuffworks.com/positive-crankcase-ventilation-system.htm
How does a positive crankcase ventilation (PCV) system work? Read about PCV systems and how they keep your car running at HowStuffWorks.
How the Biofuel Tax Credit Works
auto.howstuffworks.com/fuel-efficiency/biofuels/biofuel-tax-credit.htm
Do you know How the Biofuel Tax Credit Work? Keep reading to learn about How the Biofuel Tax Credit Works.
Biofuels vs. Fossil Fuels
auto.howstuffworks.com/fuel-efficiency/biofuels/biofuel-fossil-fuel.htm
What's the difference between biofuels and fossil fuels? Keep reading to see how biofuels compare to fossil fuels.
What will the Earth look like in 50,000 years?
science.howstuffworks.com/life/evolution/earth-50000-years.htm
The Earth in 50,000 years will most likely be a very different place. Learn about the Earth in 50,000 years in this article.
Guide to Being 28 Weeks Pregnant
What is pregnancy like when you're 28 weeks along? Check out TLC's guide to being 28 weeks pregnant.
What is atypical depression?
health.howstuffworks.com/mental-health/depression/questions/atypical-depression.htm
Atypical depression means that some of the symptoms are the opposite of what doctors had come to expect with depression. Learn about atypical depression here.
LSD Is Making a Comeback in Very Small Doses
health.howstuffworks.com/medicine/tests-treatment/lsd-is-making-comeback-in-very-small-doses.htm
Is microdosing LSD just a fad or is it time to take a comprehensive look at its potential benefits? Find out what experts think at HowStuffWorks.
Explorer Daniel Boone Blazed a Trail to the American West
history.howstuffworks.com/historical-figures/daniel-boone.htm
Forget the coonskin cap. Daniel Boone didn't wear one. But he did inspire a TV show, live with (and fight) Indians and help establish Kentucky as the 14th colony.
Is All That Shines Really Sterling Silver?
home.howstuffworks.com/home-decor/decorating-styles-techniques/sterling-silver.htm
The Brits standardized what it means for an item to be sterling silver way back in the 14th century. But how can you tell if something is sterling or not?
Were the Philistines Really Uncultured 'Philistines'?
history.howstuffworks.com/history-vs-myth/philistines.htm
The Philistines often show up in the Bible as a ferocious tribe waging war on the Israelites. But what do we know of them from archaeology?