0
Skip to Content
Today You Should Know
๐Ÿ‘‹ About
๐Ÿ“ Articles
๐Ÿซ Anatomy
๐ŸŒŒ Astronomy
๐Ÿฆ  Biology
๐Ÿงช Chemistry
๐ŸŽญ Culture
๐Ÿ”ง Engineering
๐ŸŸ Food & Drink
๐Ÿ“œ History
โœ๏ธ Language
๐Ÿงต Life Skills
๐Ÿงฎ Math
๐ŸŽน Music
๐Ÿงฒ Physics
๐Ÿง  Psychology
๐Ÿ›๏ธ Public Policy
โš™๏ธ Technology
๐Ÿ‹ Zoology
All Articles
๐Ÿ“š Book Recs
๐Ÿฅ— 9 Books about Health & Well-being
๐Ÿค” 18 Books about Things You Might Not Know
๐Ÿ‘จโ€๐Ÿ‘ฉโ€๐Ÿ‘งโ€๐Ÿ‘ฆ 15 Books about Interesting People
๐Ÿ›๏ธ 7 Books about the Present
๐ŸŒž 10 Books about the Past
๐Ÿš€ 2 Books about the Future
All Book Recommendations
๐Ÿค” Submit a Question
๐Ÿฆ„ Weird Wikipedia
Subscribe
Today You Should Know
๐Ÿ‘‹ About
๐Ÿ“ Articles
๐Ÿซ Anatomy
๐ŸŒŒ Astronomy
๐Ÿฆ  Biology
๐Ÿงช Chemistry
๐ŸŽญ Culture
๐Ÿ”ง Engineering
๐ŸŸ Food & Drink
๐Ÿ“œ History
โœ๏ธ Language
๐Ÿงต Life Skills
๐Ÿงฎ Math
๐ŸŽน Music
๐Ÿงฒ Physics
๐Ÿง  Psychology
๐Ÿ›๏ธ Public Policy
โš™๏ธ Technology
๐Ÿ‹ Zoology
All Articles
๐Ÿ“š Book Recs
๐Ÿฅ— 9 Books about Health & Well-being
๐Ÿค” 18 Books about Things You Might Not Know
๐Ÿ‘จโ€๐Ÿ‘ฉโ€๐Ÿ‘งโ€๐Ÿ‘ฆ 15 Books about Interesting People
๐Ÿ›๏ธ 7 Books about the Present
๐ŸŒž 10 Books about the Past
๐Ÿš€ 2 Books about the Future
All Book Recommendations
๐Ÿค” Submit a Question
๐Ÿฆ„ Weird Wikipedia
Subscribe
๐Ÿ‘‹ About
Folder: ๐Ÿ“ Articles
Back
๐Ÿซ Anatomy
๐ŸŒŒ Astronomy
๐Ÿฆ  Biology
๐Ÿงช Chemistry
๐ŸŽญ Culture
๐Ÿ”ง Engineering
๐ŸŸ Food & Drink
๐Ÿ“œ History
โœ๏ธ Language
๐Ÿงต Life Skills
๐Ÿงฎ Math
๐ŸŽน Music
๐Ÿงฒ Physics
๐Ÿง  Psychology
๐Ÿ›๏ธ Public Policy
โš™๏ธ Technology
๐Ÿ‹ Zoology
All Articles
Folder: ๐Ÿ“š Book Recs
Back
๐Ÿฅ— 9 Books about Health & Well-being
๐Ÿค” 18 Books about Things You Might Not Know
๐Ÿ‘จโ€๐Ÿ‘ฉโ€๐Ÿ‘งโ€๐Ÿ‘ฆ 15 Books about Interesting People
๐Ÿ›๏ธ 7 Books about the Present
๐ŸŒž 10 Books about the Past
๐Ÿš€ 2 Books about the Future
All Book Recommendations
๐Ÿค” Submit a Question
๐Ÿฆ„ Weird Wikipedia
Subscribe
Where does "hunky-dory" come from?
History, Language, Culture Caitlin Olson 5/29/25 History, Language, Culture Caitlin Olson 5/29/25

Where does "hunky-dory" come from?

It certainly doesnโ€™t have a โ€œhunky-doryโ€ past

Read More
Why does a tire company rate restaurants?
History, Food & Drink Caitlin Olson 5/1/25 History, Food & Drink Caitlin Olson 5/1/25

Why does a tire company rate restaurants?

โ€œYes, Iโ€™ll have the caviar with a side of car tires.โ€

Read More
Why are hot dogs called hot dogs?
Food & Drink, Language, History Caitlin Olson 3/13/25 Food & Drink, Language, History Caitlin Olson 3/13/25

Why are hot dogs called hot dogs?

Let me be frank(furter).

Read More
Why is New Year's Day on January 1?
History Caitlin Olson 12/26/24 History Caitlin Olson 12/26/24

Why is New Year's Day on January 1?

More like Ja-new-ary ๐Ÿฅ

Read More
Why are there so many Union Stations in America?
History Caitlin Olson 12/12/24 History Caitlin Olson 12/12/24

Why are there so many Union Stations in America?

Itโ€™s not because Americans lack creativity

Read More
Are there more people alive today than have ever lived?
History, Math Caitlin Olson 11/28/24 History, Math Caitlin Olson 11/28/24

Are there more people alive today than have ever lived?

Even though it might seem like it on your crowded commuteโ€ฆ

Read More
How did Dr Pepper get its name?
Food & Drink, History Caitlin Olson 10/17/24 Food & Drink, History Caitlin Olson 10/17/24

How did Dr Pepper get its name?

Disclaimer: I am not responsible for the missing period

Read More
Why does America use a MM/DD/YY date format?
History, Language, Culture Caitlin Olson 9/14/24 History, Language, Culture Caitlin Olson 9/14/24

Why does America use a MM/DD/YY date format?

Itโ€™s like an American accent but with calendars.

Read More
Why is dental insurance separate from medical insurance?
History, Policy, Life Skills Caitlin Olson 9/14/24 History, Policy, Life Skills Caitlin Olson 9/14/24

Why is dental insurance separate from medical insurance?

Your teeth are a part of your body, right?

Read More
Why is โ€œWโ€ called double U and not double V?
History, Language Caitlin Olson 9/14/24 History, Language Caitlin Olson 9/14/24

Why is โ€œWโ€ called double U and not double V?

Many other languages call it a โ€œdouble Vโ€. English hasnโ€™t caught up with the trends.

Read More
Why is a second called a second?
Science, Language, History Caitlin Olson 9/14/24 Science, Language, History Caitlin Olson 9/14/24

Why is a second called a second?

First came minutes, second came seconds.

Read More
What does โ€œadopt a highwayโ€ mean and how does it work?
History, Policy Caitlin Olson 9/13/24 History, Policy Caitlin Olson 9/13/24

What does โ€œadopt a highwayโ€ mean and how does it work?

What do these adoptive road parents have to do to earn those signs?

Read More
Why is soccer not a popular spectator sport in the United States?
History, Culture Caitlin Olson 9/13/24 History, Culture Caitlin Olson 9/13/24

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

We Americans sure do like American things.

Read More
Why is there cotton in pill bottles?
History, Life Skills Caitlin Olson 9/13/24 History, Life Skills Caitlin Olson 9/13/24

Why is there cotton in pill bottles?

And should you take it out after opening?

Read More
Why is a day 24 hours? Why is an hour 60 minutes?
History, Language, Math Caitlin Olson 9/13/24 History, Language, Math Caitlin Olson 9/13/24

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
How does carbon dating work?
Chemistry, Biology, History, Physics Caitlin Olson 9/12/24 Chemistry, Biology, History, Physics Caitlin Olson 9/12/24

How does carbon dating work?

Swipe right for science.

Read More
Why do we eat cake on birthdays?
History, Food & Drink, Culture Caitlin Olson 9/5/24 History, Food & Drink, Culture Caitlin Olson 9/5/24

Why do we eat cake on birthdays?

Your birthday wish for birthday history has been granted.

Read More
Why is tennis scoring so weird?
History, Culture, Language Caitlin Olson 5/16/24 History, Culture, Language Caitlin Olson 5/16/24

Why is tennis scoring so weird?

Youโ€™re gonna โ€œloveโ€ this one!

Read More
Why do we say "brand" new?
Language, History Caitlin Olson 4/25/24 Language, History Caitlin Olson 4/25/24

Why do we say "brand" new?

And, for that matter, why do we say brand โ€œspankingโ€ new?

Read More
How did early Polynesian explorers find islands?
History, Science, Astronomy Caitlin Olson 4/17/24 History, Science, Astronomy Caitlin Olson 4/17/24

How did early Polynesian explorers find islands?

No radio, no compass, no maps. How ancient explorers found islands in the middle of nowhere.

Read More
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 ๐Ÿ‘‡

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

Learn five facts about Caitlin.

Caitlin

Recent Articles

About

Book Recommendations

Privacy Policy