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How China's Pollution Sniffers Work
science.howstuffworks.com/environmental/green-science/pollution-sniffer.htm
Air pollution in China has spurred the training of air pollution sniffers to detect toxic gas. Read more about air pollution detection through smell.
Environmental Activities
lifestyle.howstuffworks.com/crafts/animal-crafts/environmental-activities.htm
Dig in dirt or through books to educate yourself on the environment. Learn more about environmental activities and kids crafts.
How Lipstick Works
health.howstuffworks.com/skin-care/beauty/skin-and-makeup/lipstick.htm
Lipstick is something most women have used. But do you know what ingredients are in lipstick or how it was discovered? Learn how lipstick works.
Top 10 Unexpected Valentine Gifts
people.howstuffworks.com/culture-traditions/holidays-other/10-unexpected-valentine-gifts.htm
Looking to give an unexpected Valentine's Day gift? Take a look at 10 unexpected Valentine's Day gifts TLC recommends.
Tree Leaves Identification Quiz
play.howstuffworks.com/quiz/tree-leaves-identification-quiz
Calling all nature lovers! You've seen leaves all your life, but can you successfully identify a tree based on its leaves alone? Pick it up and see, now!
Science Experiments for Kids
lifestyle.howstuffworks.com/crafts/seasonal/science-experiments-for-kids.htm
Science experiments for kids let you explore the fascinating world of science with easy instructions and everyday materials. Have fun while you learn.
10 Amazing Ancient Egyptian Inventions
science.howstuffworks.com/innovation/inventions/5-amazing-ancient-egyptian-inventions.htm
There may be no greater tribute to a society's ingenuity and vision than the Great Pyramid of Giza in Egypt. What other cool stuff did the ancient Egyptians invent?
Christmas Trivia
people.howstuffworks.com/culture-traditions/holidays-christmas/christmas-trivia.htm
Test your Christmas trivia knowledge in the areas of songs, movies, traditions and more. Uncover amazing facts as you test your Christmas trivia knowledge.
Do hummingbirds have sex in midair?
animals.howstuffworks.com/birds/hummingbird-sex.htm
Do hummingbirds have sex in midair? Learn about the amazing hummingbird and find out if they really have to hover all of the time.
How Do Solar Panels Work?
science.howstuffworks.com/environmental/energy/solar-cell.htm
Solar cells use sunlight to produce electricity. But is the 'solar revolution' upon us? Learn all about solar cells, silicon solar cells and solar power.