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What Is the Mohorovicic Discontinuity and Can Humans Ever Reach It?
science.howstuffworks.com/environmental/earth/geophysics/mohorovicic-discontinuity.htm
This seismic boundary lies within Earth between the bottom of crust and the uppermost mantle. But nobody has ever dug down deep enough to confirm it exists. So does it?
How Many Millionaires Are in the U.S.? More Than Any Other Country
money.howstuffworks.com/personal-finance/financial-planning/how-many-millionaires-in-the-us.htm
As of 2024, the number of millionaires in the U.S. was around 23.8 million. That means roughly 1 in 15 people in the U.S. has a net worth of at least seven figures. This number includes not just tycoons but also people who have slowly built wealth through investing, homeownership, and disciplined saving.
Understanding Pregnancy Symptoms
Pregnancy symptoms include changes to your reproductive and digestive system, your blood and metabolism. Read about understanding pregnancy symptoms.
How Ghosts Work
science.howstuffworks.com/science-vs-myth/afterlife/ghost.htm
Ghosts are the spirits of dead people that have either returned from the afterlife, or not moved on to it. Learn about ghosts and explanations for ghosts.
Top 5 Things You Should Know (But Don't) about Mitral Valve Prolapse
Mitral valve prolapse can lead to blood leaking in the heart where it's not supposed to. Learn what you need to know about mitral valve prolapse.
Munchausen Overview
health.howstuffworks.com/mental-health/mental-disorders/munchausen.htm
Munchausen syndrome is when someone pretends they are sick in order to gain attention or sympathy. Learn about the Munchausen syndrome mental health condition.
Prove That You Can Repair a Small Engine by Getting More Than 30 Right on This Quiz!
They might be small, but they make your life easier - do you know how to fix small engines when something goes wrong? A high score on this quiz will show you're not afraid to get your hands dirty!
How Motion Sickness Works
health.howstuffworks.com/mental-health/neurological-conditions/motion-sickness.htm
Although motion sickness is very common, scientists don't really know why we get it. Learn all about this condition at HowStuffWorks.
Secondhand Smoke Basics
health.howstuffworks.com/wellness/drugs-alcohol/understanding-secondhand-smoke-ga.htm
Secondhand smoke is far more harmful than was originally thought. Learn about the hazards of secondhand smoke and what you can do to lessen the risks.
10 Old Wives' Tales About Your Health
health.howstuffworks.com/mental-health/human-nature/health-myths/5-old-wives-tales-health.htm
If someone told you sugar makes kids hyper and cats are after your baby's air supply, you've heard some old wives' tales. Is there any truth in them?