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Organ Function Quiz
play.howstuffworks.com/quiz/organ-function-quiz
Whether you're an amateur anatomy buff or a full-fledged medical professional, we challenge you to test your knowledge with this organ function quiz ... if you have the guts.
How Much Air Pollution Comes From Cars?
auto.howstuffworks.com/air-pollution-from-cars.htm
You see it every time smoke billows from your car's exhaust pipe. There's no denying that vehicles are major contributors to air pollution.
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.
What Is the Most Abundant Element on Earth? Not Carbon
science.howstuffworks.com/most-abundant-element-on-earth.htm
Ever wondered what the most abundant element on Earth is? Or how the elements that make up our planet compare to those floating out in the vast universe?
The Bowhead Whale Survives Icy Waters and Killer Whale Attacks
animals.howstuffworks.com/mammals/bowhead-whale.htm
The bowhead whale (Balaena mysticetus) is found in the icy waters of the Arctic. These are the longest-living mammals; some bowhead whales live for over 200 years. That's older than many countries' independence!
Can you wash SPF-treated clothes?
Sunscreen is no longer your only option for deflecting the sun's UV rays. Now, you can get protection from your clothes, too. But how do you wash them?
Could an Attack on Undersea Cables Take Down the Internet?
computer.howstuffworks.com/could-attack-on-undersea-cables-disrupt-internet.htm
Much of the infrastructure that makes the internet possible lies on the bottom of the world's oceans. HowStuffWorks dives down to check them out.
Sand Is in Such High Demand, People Are Stealing Tons of It
As the world becomes more urbanized, the demand for sand, a key ingredient of concrete, keeps growing. But there's only so much sand to go around.
After the Sun Dies, It'll Become a Stellar Crystal
science.howstuffworks.com/after-sun-dies-itll-become-stellar-crystal.htm
The sun is going to eventually leave behind a shimmering legacy and turn into a massive crystal. Learn why at HowStuffWorks.
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.