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Your search for "natural science" returned 2,500 results
How tall can a tree grow?
science.howstuffworks.com/life/botany/tree-grow.htm
Can a tree grow and grow? Or can a tree grow only to the point that water transport limits it? Learn more about tree growth and the tallest trees.
What Kind of Number Am I?
play.howstuffworks.com/quiz/what-kind-of-number-am-i-1
Everything in the universe comes down to numbers. There's a baffling mathematical symmetry to everything no matter how disorganized and chaotic it is. Numbers lie at the center of everything! But what numbers? Take the quiz and see what ones you know!
Why do humans walk on two legs?
animals.howstuffworks.com/mammals/bipedalism.htm
Bipedalism was one of the first features to develop in our human ancestors. Is bipedalism better than being on all fours? Read more about bipedalism.
Which Spirit Stone Are You?
play.howstuffworks.com/quiz/which-spirit-stone-are-you
Do you harness your energy like Rose Quartz, or are you as intuitive as Fluorite? Share the inner workings of your soul, and we'll reveal the spirit stone you are at heart!
Goodbye to Allergies? Scientists Discover How to Trick Body's Immune System
Northwestern University researchers have a 'Trojan horse' strategy for treating asthma and allergies. HowStuffWorks Now explains.
Everlasting Love: How do you know if it's for real?
health.howstuffworks.com/relationships/love/everlasting-love-how-do-you-know-if-its-for-real.htm
How do you know if everlasting love is for real? Learn about the science and likelihood behind everlasting love at Discovery Health.
10 Weird Facts About Biological Rhythms
health.howstuffworks.com/mental-health/human-nature/behavior/10-facts-about-biological-rhythms.htm
Biological rhythms are strange and wonderful things. See 10 weird biological rhythm facts to explore human nature.
Troubled Hedgehogs Fare Better in Urban Environments
animals.howstuffworks.com/mammals/hedgehogs-rural-urban-environments.htm
How have hedgehogs adapted to human environments? Learn more about urban hedgehogs in this HowStuffWorks Now article.
Want to Know What Gemstone Matches Your Personality? Find Out Now!
play.howstuffworks.com/quiz/gemstone-that-matches-their-personality
Are you deep and mysterious like a ruby, or do you sparkle and shine like a diamond? Shower us with the gift of you, and we'll tell you which gemstone you are most like!
How Do You Sleep When Sailing Solo for 4,000 Miles?
health.howstuffworks.com/mental-health/sleep/disorders/sleep-when-sailing-solo-4000-miles.htm
Four weeks and 4,000 miles is a long time to get by on catnaps during a solo sailing race.