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What grade of steel was used in the World Trade Center?
science.howstuffworks.com/engineering/structural/grade-of-steel-used-in-world-trade-center.htm
The materials used to build the World Trade Center's twin towers have been heavily scrutinized since the 9/11 terrorist attacks -- including the steel that formed the frames of the skyscrapers.
How Chopsticks Became the Staple Utensil of Asia
recipes.howstuffworks.com/chopsticks.htm
Chopsticks have been in use since 1200 B.C.E. And today 20 percent of the world's population use the utensil. HowStuffWorks looks at its history.
Can You Ace This Aviation Quiz?
play.howstuffworks.com/quiz/can-you-ace-this-aviation-quiz
Thanks to many sky-centric technologies, humans have been flying for centuries, in balloon, planes and aircraft of all kinds. What do you really know about aviation?
How Many Houseplants Do You Need for Good Indoor Air Quality?
home.howstuffworks.com/houseplants-indoor-air-quality.htm
For decades we've been told having houseplants can improve our indoor air quality. So, do you need to live in a veritable jungle for this to ring true?
After 60 Years, Wally Funk, 82, Is Finally Going to Space
science.howstuffworks.com/wally-funk-news.htm
On July 20, 2021, Wally Funk will blast off. Her trip to space has been delayed since 1961, when the 'Mercury 13' Woman in Space Program was cancelled.
5 Celebrities Who Had Heart Attacks
health.howstuffworks.com/diseases-conditions/cardiovascular/heart/5-celebrity-heart-attacks.htm
There have been a few celebrities who had heart attacks. See our list of five celebrities who had heart attacks to learn more about heart disease.
Are the Polar Ice Caps Melting Faster Than We Thought?
science.howstuffworks.com/environmental/earth/geophysics/question473.htm
The polar ice caps have been in the news recently because of their alleged shrinking due to global warming. How much would the oceans rise if the ice caps melted completely?
How to Get Ketchup Out of Clothes
home.howstuffworks.com/how-to-remove-ketchup-stains.htm
Ketchup stains have been around as long as hot dogs and french fries. There are some simple and easy stain removal tips to clean clothes. Learn to clean ketchup stains.
Ultimate Guide to Black Angus Steak
recipes.howstuffworks.com/black-angus.htm
Black angus has been all the rage in the meat-eating world. Visit HowStuffWorks to learn all about black angus and why it's so popular.
Why does your sweat sometimes smell like ammonia?
health.howstuffworks.com/skin-care/information/nutrition/ammonia-sweat-smell.htm
Have you noticed an ammonia sweat smell when you've been exercising? See what causes it and what you can do to stop ammonia sweat smell.