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Do you need a secondary air injection system?
auto.howstuffworks.com/secondary-air-injection-system.htm
Do you need a secondary air injection system? Read about the possible advantages of a secondary air injection system for your car.
Can you stop a cavity from getting worse?
health.howstuffworks.com/wellness/oral-care/problems/stop-cavity-from-getting-worse.htm
Can you stop a cavity from getting worse? Once a cavity starts, it can eventually destroy an entire tooth. Learn how to stop a cavity from getting worse.
Do tongue scrapers really help?
health.howstuffworks.com/wellness/oral-care/products/tongue-scrapers-really-help.htm
Tongue scrapers are said to help remove the bacteria that causes bad breath. But is using a tongue scraper any more effective than just brushing your tongue?
How are bendy straws made?
science.howstuffworks.com/innovation/everyday-innovations/how-bendy-straws-are-made.htm
It bends to your will, it has nifty ridges, and it allows patients and little kids alike to slurp along with everyone else. How did the flexible straw begin its days?
Ridiculous History: A Nation Sacrifices Its Sausage to Fight a War
They may not seem stealthy now, but in WWI, zeppelins were airborne attackers. Learn what strange ingredient zeppelins needed at HowStuffWorks Now.
Should You Know if Your Doctor Is a Democrat or a Republican?
people.howstuffworks.com/should-you-know-your-doctor-is-a-democrat-a-republican.htm
A new study found instances where doctors' political beliefs correlated with their patient treatment options. HowStuffWorks Now investigates.
Is Vantablack Really the Blackest Black?
science.howstuffworks.com/vantablack.htm
Vantablack is one of the darkest substances known, able to absorb up to 99.965 percent of visible light. But is it the blackest of blacks on the planet?
The Keto Craze: Does the Diet Live Up to the Hype?
health.howstuffworks.com/wellness/diet-fitness/diets/keto-craze-does-diet-live-up-to-hype.htm
The keto diet is high in fat and low in carbs, good for quick weight loss, but not to keep it off. HowStuffWorks looks at the science behind the diet.
How Does Google Maps Predict Traffic?
electronics.howstuffworks.com/how-does-google-maps-predict-traffic.htm
Your smartphone can help Google figure out traffic patterns. To learn how the Google Maps app uses driver-provided data, visit HowStuffWorks.
Can Snakes Really Come Up a Toilet Pipe?
animals.howstuffworks.com/animal-facts/can-snakes-really-come-up-toilet-pipe.htm
Snakes are known to hide out in unexpected places. How can snakes come up toilet pipe? Learn more about snakes in toilet pipes at HowStuffWorks.