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What Is a Green Roof?
science.howstuffworks.com/environmental/green-science/green-rooftop.htm
A green roof is a roof that is covered in plants, which reduces stormwater run-off and lowers cooling costs. Find out how a green roof can help the environment.
When do most heart attacks occur -- and why?
health.howstuffworks.com/diseases-conditions/cardiovascular/heart/when-do-heart-attacks-occur.htm
When do heart attacks occur? Well, all year, but there's an especially large spike during the holidays; find out why.
How Trailer Bearings Work
auto.howstuffworks.com/auto-parts/towing/equipment/accessories/trailer-bearings.htm
Trailer bearings are an important component in towing. Learn about trailer bearings at HowStuffWorks.
Why Do Songs Get Stuck in Your Head?
science.howstuffworks.com/life/inside-the-mind/human-brain/songs-stuck-in-head.htm
Why do songs get stuck in my head, you might wonder. The phenomenon is called an earworm -- learn why songs can get stuck in your head.
Why are wolves making a comeback in the United States?
animals.howstuffworks.com/mammals/wolf-population-comeback.htm
Wolves are making a comeback due to federal laws that protect these animals. Learn why some people aren't excited about wolves making a comeback.
10 Historical Misconceptions
history.howstuffworks.com/history-vs-myth/10-historical-misconceptions.htm
Some untrue historical events have been passed down for so many years that they have become truths. See our list of 10 historical misconceptions.
What if Everybody in the U.S. Flushed the Toilet at the Same Time?
home.howstuffworks.com/home-improvement/plumbing/everybody-flushes-toilets.htm
No one knows for sure, but chances are, it would make a terrible mess.
How to Choose Aquarium Fish
animals.howstuffworks.com/pets/choosing-aquarium-fish.htm
To choose your aquarium fish, one must take many factors into consideration. Find out how to choose the right fish for your aquarium community.
Was an Irish monk the first European to reach America?
history.howstuffworks.com/history-vs-myth/irish-monk-america.htm
An Irish monk could have been the first person to discover the American continent, according to ancient texts. Learn more about the Irish monk discovery.
Is the army testing an invisible tank?
science.howstuffworks.com/invisible-tank.htm
An invisible tank could give any military a distinctive edge on the battlefield. Find out how the British army is developing an invisible tank.