0
Skip to Content
Today You Should Know
👋 About
🫁 Anatomy
🌌 Astronomy
🦠 Biology
🧪 Chemistry
🎭 Culture
🔧 Engineering
🍟 Food & Drink
📜 History
✍️ Language
🧵 Life Skills
🧮 Math
🎹 Music
🧲 Physics
🧠 Psychology
🏛️ Public Policy
⚙️ Technology
🐋 Zoology
All Articles
Surprise Me!
🤔 Submit a Question
📚 Book Recommendations
🦄 Weird Wikipedia
Subscribe
Today You Should Know
👋 About
🫁 Anatomy
🌌 Astronomy
🦠 Biology
🧪 Chemistry
🎭 Culture
🔧 Engineering
🍟 Food & Drink
📜 History
✍️ Language
🧵 Life Skills
🧮 Math
🎹 Music
🧲 Physics
🧠 Psychology
🏛️ Public Policy
⚙️ Technology
🐋 Zoology
All Articles
Surprise Me!
🤔 Submit a Question
📚 Book Recommendations
🦄 Weird Wikipedia
Subscribe
👋 About
Folder: 📝 Articles
Back
🫁 Anatomy
🌌 Astronomy
🦠 Biology
🧪 Chemistry
🎭 Culture
🔧 Engineering
🍟 Food & Drink
📜 History
✍️ Language
🧵 Life Skills
🧮 Math
🎹 Music
🧲 Physics
🧠 Psychology
🏛️ Public Policy
⚙️ Technology
🐋 Zoology
All Articles
Surprise Me!
🤔 Submit a Question
📚 Book Recommendations
🦄 Weird Wikipedia
Subscribe
No results found
History, Culture Caitlin Olson 2/7/26 History, Culture Caitlin Olson 2/7/26

Why is soccer not a popular spectator sport in the United States?

We Americans sure do like American things.

Read More
Language, Culture Caitlin Olson 2/7/26 Language, Culture Caitlin Olson 2/7/26

Why do we call our parents "Mom" and "Dad"?

Not many folks call their parents “Denise” and “Bill.”

Read More
Science, Language, History Caitlin Olson 2/7/26 Science, Language, History Caitlin Olson 2/7/26

Why is a second called a second?

First came minutes, second came seconds.

Read More
History, Language, Math Caitlin Olson 2/7/26 History, Language, Math Caitlin Olson 2/7/26

Why is a day 24 hours? Why is an hour 60 minutes?

We have to thank some ancient minds for these special numbers.

Read More
History, Life Skills Caitlin Olson 2/7/26 History, Life Skills Caitlin Olson 2/7/26

Why is there cotton in pill bottles?

And should you take it out after opening?

Read More
Technology Caitlin Olson 2/7/26 Technology Caitlin Olson 2/7/26

What made old Nokia phones nearly indestructible?

🎵 Da-na-da-na, da-na-na-na, da-na-da-na-na 🎵

Read More
Science, Technology, Life Skills Caitlin Olson 2/7/26 Science, Technology, Life Skills Caitlin Olson 2/7/26

How should you charge your devices to maximize battery life?

Don’t overheat, try to keep it between 20-80%, and avoid knockoff chargers.

Read More
Engineering, Technology, Physics Caitlin Olson 2/7/26 Engineering, Technology, Physics Caitlin Olson 2/7/26

How does your phone track steps?

I’ll walk you through it step-by-step.

Read More
Physics, Chemistry Caitlin Olson 2/7/26 Physics, Chemistry Caitlin Olson 2/7/26

Why does glass break so easily?

I'll be transparent...

Read More
Science, Psychology, Anatomy, Biology Caitlin Olson 2/7/26 Science, Psychology, Anatomy, Biology Caitlin Olson 2/7/26

Why do I cry when I laugh hard?

We don’t know for sure, but crying and laughing are both ways that your brain soothes you and reduces stress. Crying while laughing could also just be because your tear ducts are getting stimulated by your face muscles.

Read More
Anatomy Caitlin Olson 2/7/26 Anatomy Caitlin Olson 2/7/26

What causes the "butterflies in your stomach" feeling?

Fight, flight… or flirt?

Read More
Psychology, Anatomy Caitlin Olson 2/7/26 Psychology, Anatomy Caitlin Olson 2/7/26

Why does stress cause people to overeat?

When cortisol calls, cookies answer.

Read More
Anatomy, Life Skills Caitlin Olson 2/7/26 Anatomy, Life Skills Caitlin Olson 2/7/26

Why does oversleeping make you tired?

I yawned so much writing this

Read More
Science, Anatomy, Biology Caitlin Olson 2/7/26 Science, Anatomy, Biology Caitlin Olson 2/7/26

Why do we rub our eyes when we are tired?

It’s an instinct that prepares us for sleep. But you might want to think twice before doing it.

Read More
Anatomy, Physics Caitlin Olson 2/7/26 Anatomy, Physics Caitlin Olson 2/7/26

Why does traveling make you tired?

Going from point A to point Zzzzzzz

Read More
History, Food & Drink Caitlin Olson 2/7/26 History, Food & Drink Caitlin Olson 2/7/26

Why does a tire company rate restaurants?

“Yes, I’ll have the caviar with a side of car tires.”

Read More
Food & Drink, Physics Caitlin Olson 2/7/26 Food & Drink, Physics Caitlin Olson 2/7/26

Why does a wooden spoon stop water from boiling over in a pot?

A penne saved is a penne earned.

Read More
Food & Drink, Biology Caitlin Olson 2/7/26 Food & Drink, Biology Caitlin Olson 2/7/26

Why do potatoes sprout?

Open this article to get tater taught

Read More
Chemistry, Life Skills Caitlin Olson 2/7/26 Chemistry, Life Skills Caitlin Olson 2/7/26

What does shaving cream do?

Let me shave you the trouble of researching this yourself

Read More
History, Food & Drink Caitlin Olson 2/7/26 History, Food & Drink Caitlin Olson 2/7/26

How was bread invented?

You knead to read this one

Read More
Newer Posts
Older Posts
GIF of Past Newsletter Articles

Curious about how the world works?

Today You Should Know is a free weekly email newsletter designed to help you learn something new every Friday in 5 minutes or less.

Subscribe today 👇

Today You Should Know is a labor of love by Caitlin.

Learn five facts about Caitlin.

Caitlin

Recent Articles

About

Book Recommendations

Privacy Policy