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Do cows pollute as much as cars?
animals.howstuffworks.com/mammals/methane-cow.htm
Cow flatulence produces the greenhouse gas methane, which is linked to global warming. Find out how scientists are working to reduce cow flatulence in livestock.
How Often Are Septic Tanks Emptied, and Where Do the Contents Go?
home.howstuffworks.com/home-improvement/plumbing/septic-tank-cleaning.htm
A septic tank requires a good cleaning to flush out sludge and scum, which don't drain like effluent. Learn how a septic tank cleaning works.
How Diesel Engines Work
auto.howstuffworks.com/diesel.htm
Diesel engines are often more efficient and less expensive to operate than their gasoline alternatives. So why aren't there more diesels on the roads? Well, they have their own issues, too.
How St. Patrick's Day Works
people.howstuffworks.com/culture-traditions/holidays-other/saint-patrick.htm
There's more to St. Patrick's Day than beer and gaudy green attire. Learn about the story, the saint, the shamrocks and the famous Blarney Stone.
11 Longest-running Daytime Soap Operas
entertainment.howstuffworks.com/11-longest-running-daytime-soap-operas.htm
The longest running soap operas have entertained daytime audiences with captivating story lines. See the 11 longest-running soap operas and their plots.
1989 Ferrari Mythos Concept Car
auto.howstuffworks.com/1989-ferrari-mythos-concept-car.htm
The 1989 Ferrari Mythos concept car drew on Ferrari's classic barchetta designs. See pictures and a profile of the 1989 Ferrari Mythos concept car.
How Subprime Mortgages Work
home.howstuffworks.com/real-estate/buying-home/subprime-mortgage.htm
Subprime mortgages have allowed people with shaky credit to buy houses. Learn more about subprime mortgages and how to get a subprime mortgage.
How Kleptomania Works
health.howstuffworks.com/mental-health/mental-disorders/kleptomania.htm
Kleptomania is an addiction to stealing items that is not related to personal use or a monetary gain. Learn about kleptomania and kleptomania defenses.
Uranus: The Ice Giant on a Tilted Axis
science.howstuffworks.com/46008-uranus-explained.htm
Uranus is the seventh planet from the sun and sits on an axial plane tilted at a jaw-dropping 97.7-degree angle. And yes, Uranus does actually stink.
How to Identify Antique Wooden Furniture
When you want to refinish old wooden furniture, the best place to look is the family attic, basement, or garage. Whether it's worth saving depends on its style and construction. Learn to identify antique furniture.