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What Does It Mean If Your Blood Oxygen Level Is Low?
health.howstuffworks.com/human-body/systems/circulatory/low-blood-oxygen.htm
A low oxygen level in your blood is a good indicator of a COVID-19 infection, but what exactly does that mean and how do doctors test for it?
Can Straining on the Toilet Kill You?
health.howstuffworks.com/human-body/systems/digestive/can-straining-on-toilet-kill.htm
For people with certain conditions, straining to poop can have deadly consequences. Find out how straining on the toilet can kill.
Why Dogs Love Belly Rubs, Cats Not So Much
animals.howstuffworks.com/pets/dogs-cat-belly-rubs.htm
Why do dogs love belly rubs while cats seem to hate them? HowStuffWorks looks at the facts about animal belly rubs.
Chicken vs. Hen Confusion Is Common but the Difference Matters
animals.howstuffworks.com/birds/chicken-vs-hen.htm
In casual conversation, people often use "chicken" and "hen" interchangeably — but they’re not quite the same. A quick chicken vs. hen comparison clarifies distinctions based on age, sex, and role in poultry farming, meat production, and egg laying.
How Hydropower Plants Work
science.howstuffworks.com/environmental/energy/hydropower-plant.htm
Hydropower plants produce about 24 percent of the world's electricity and supply more than 1 billion people with power. Find out how hydropower plants work.
How Ultrasound Works
science.howstuffworks.com/ultrasound.htm
Ultrasound lets us peek into the human body to see everything from heart valves to a moving baby. But how do sound waves give us a picture?
Scalp Psoriasis Overview
health.howstuffworks.com/skin-care/scalp-care/problems/scalp-psoriasis.htm
Scalp psoriasis is a very bothersome affliction. Visit HowStuffWorks to learn all about scalp psoriasis.
Sun Poisoning
health.howstuffworks.com/skin-care/beauty/sun-care/sun-poisoning.htm
Want to learn about sun poisoning? Visit HowStuffWorks to discover how the sun can actually poison you.
What's the difference between a semi-automatic weapon and a machine gun?
science.howstuffworks.com/semi-automatic-weapon-vs-machine-gun.htm
The term "semi-automatic weapon" is used in the U.S. media often. But what does it really mean? Is it just another term for a machine gun?
Most Powerful Countries: 2024 World Rankings
history.howstuffworks.com/world-history/most-powerful-countries-in-the-world.htm
The world's most powerful countries shape global affairs with economic strength, military power, tech, and cultural influence, driving international policy.