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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?
Hedwig Kohn: The Physics of Determination
history.howstuffworks.com/historical-figures/hedwig-kohn-physics.htm
Hedwig Kohn left Nazi Germany for the U.S. in 1940 and became a leading physicist. HowStuffWorks looks at her extraordinary life.
U.S. Military Dogs Usually Outrank Their Handlers
science.howstuffworks.com/military-dogs-outrank-handlers.htm
Members of the U.S. armed forces and their loyal dogs have always had a special relationship - so special that the canine usually outranks its handler. What's behind this military tradition?
Does mouthwash affect your immune system?
health.howstuffworks.com/human-body/systems/immune/does-mouthwash-affect-immune-system.htm
Some scientists think your mouthwash could be hurting your immune system. Is there something sinister lurking in your oral care routine?
Try T'ej, the Honey Wine of Ethiopia
recipes.howstuffworks.com/tej.htm
Fermented from honey, yeast, water and gesho and served chilled in beaker-shaped bottles known as bereles, t'ej is Ethiopia's most popular drink and one of the oldest in the world.
How Catholic Are You?
play.howstuffworks.com/quiz/how-catholic-are-you
It's the biggest religion on the planet, which means there are plenty of ways to approach it. Can we figure out yours?
The Enigma of 137: Science's Most Magical Number
science.howstuffworks.com/dictionary/physics-terms/why-is-137-most-magical-number.htm
The number 137, which is significant in multiple applications, has long been an object of fascination for physicists, mathematicians and mystics.
The Most Powerful Passport Comes From a Nation State
people.howstuffworks.com/most-powerful-passport.htm
Want to know which travel documents unlock the most doors around the world? Every year, the Henley Passport Index ranks passports based on how many destinations their holders can visit without needing a prior visa.
Jim Cummings: The Voice of Millennial Childhoods
entertainment.howstuffworks.com/jim-cummings.htm
Few voice actors have made an impact quite like Jim Cummings. From beloved childhood characters to dynamic villains, Cummings has built a legendary voice acting career that connects with audiences across generations.
Goose vs. Swan: Distinguishing Between Long-necked Birds
animals.howstuffworks.com/birds/goose-vs-swan.htm
At first glance, geese and swans seem like large, long-necked cousins in the bird world — and they are. But the goose vs. swan comparison reveals key differences in size, behavior, migration, and even their place in the ecosystem.