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Hand Sniffing After Hand Shaking Is a Thing
Humans use their sniffers to check out each other, notably after shaking hands with someone. Learn more at HowStuffWorks Now.
How Long Can Human Fingernails Grow?
Fingernails can grow to extreme lengths. Learn more about how long and fast fingernails can grow in this HowStuffWorks Now article.
A Dose of Nature Could Improve Mental Health for City Dwellers
Living near birds and shrubs has measurable benefits, new research shows. Find out how nearby nature affects people in urban areas at HowStuffWorks.
Why Didn't Evolution Give Us the Ability to Smell Fresh Water?
science.howstuffworks.com/life/evolution/humans-smell-fresh-water-evolution.htm
You'd think being able to smell drinkable water would be an evolutionary advantage. But we can only smell things that suggest potable water. Why is that?
In 'Star Wars' Entire Stars and Planets Get Destroyed — Is That Possible?
entertainment.howstuffworks.com/star-wars-starkiller-possible.htm
Could a planet or star ever be destroyed through man-made means, like in the 'Star Wars' series? Learn more about Starkiller Base.
Could Our Spacecraft Accidentally Ignite an Alien World's Entire Atmosphere?
science.howstuffworks.com/rockets-accidentally-ignite-alien-world-atmosphere.htm
Outer planets in our solar system have atmospheres made up of flammable chemicals that can cause explosions on Earth. Could a rocketship, or electric spark, ignite them?
Phineas Parkhurst Quimby: The Mind Can Heal the Body
people.howstuffworks.com/phineas-parkhurst-quimby-new-thought.htm
The Quimby Manuscripts, published in 1921, demonstrate Quimby's early role in Christian Science. HowStuffWorks takes a look.
What are the likely outcomes of mankind's new knowledge of the human genome?
science.howstuffworks.com/life/genetic/knowledge-human-genome.htm
Knowledge of the human genome project will revolutionize science and modern medicine -- but how, exactly? Learn about knowledge of the human genome.
We'll Give You Two Animals, You Tell Us Which Is the Predator and Which Is the Prey
What happens when a black mamba faces off with a bird? What if a lion meets a crocodile? Predators can become prey, and prey can become predators in the blink of an eye. If we give you two animals, can you tell us which is which?
New Study Shows Cannabis Boosts Memory in Older Mice
Researchers have shown that THC in marijuana alters the structure of the brains in older mice to be more like brains of younger mice. Could the same be true for humans?