Why Do I Cry?

Chloe Effron
Chloe Effron

WHY? is our attempt to answer all the questions every little kid asks. Do you have a question? Send it to why@mentalfloss.com.

Here’s the easy answer: you cry because your brain tells a gland under each of your eyelids to make tears. These are called the lacrimal (LAH-kruh-mul) glands. But your body doesn’t just make one type of tear. It makes three! Each type of tear has a special job to do.

Some tears protect your eyes. Basal (BAY-sul) tears spread over your eyes all the time to keep them moist and get rid of bad bacteria. Reflex tears wash away stuff that gets in your eye, like sand or dirt. And then there are emotional tears. These are connected to your emotions, or feelings, like sadness, anger, fear—even happiness! These strong feelings cause your heart to pump faster, your breathing to speed up and the opening in your throat to get bigger, making it hard to swallow. They also cause your eyes to make emotional tears. A lot of people feel calmer after they cry, but we’re not sure why. Emotional tears are unique to humans. We are the only creatures on Earth that cry because of our feelings.

Some scientists think we cry as a result of how ancient humans learned to survive. Crying and tears may have been ways to let other people know we are upset and that we want help from them. We know babies cry loudly to get help from their parents. But as we grow up and learn to take care of ourselves, we make less noise when we cry and instead make tears. Some scientists think early humans learned that quieter crying kept them safe from enemies, and from getting caught by wild animals that might eat them! But with tears, they could still let other people know they needed help without making a lot of noise.

For further reading, check out our story "7 Teary Facts About the Science of Crying." 


Celebrate the Holidays With the 2020 Harry Potter Funko Pop Advent Calendar

Funko
Funko

Though the main book series and movie franchise are long over, the Wizarding World of Harry Potter remains in the spotlight as one of the most popular properties in pop-culture. The folks at Funko definitely know this, and every year the company releases a new Advent calendar based on the popular series so fans can count down to the holidays with their favorite characters.

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Right now, you can pre-order the 2020 edition of Funko's popular Harry Potter Advent calendar, and if you do it through Amazon, you'll even get it on sale for 33 percent off, bringing the price down from $60 to just $40.

Funko Pop!/Amazon

Over the course of the holiday season, the Advent calendar allows you to count down the days until Christmas, starting on December 1, by opening one of the tiny, numbered doors on the appropriate day. Each door is filled with a surprise Pocket Pop! figurine—but outside of the trio of Harry, Hermione, and Ron, the company isn't revealing who you'll be getting just yet.

Calendars will start shipping on October 15, but if you want a head start, go to Amazon to pre-order yours at a discount.

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100 Fascinating Facts About Earth

The best Spaceball.
The best Spaceball.
NASA

Did you know that there’s a place in the South Pacific Ocean called Point Nemo that’s farther from land than any other point on Earth? So far, in fact, that the closest humans are usually astronauts aboard the International Space Station. (And by the way: The map you’re about to look for Point Nemo on might not be entirely accurate; a certain amount of distortion occurs when trying to depict a 3D planet on a 2D surface.)

In this all-new episode of The List Show, Mental Floss editor-in-chief Erin McCarthy is journeying to the center of the Earth, and visiting its oceans, its atmosphere, and even space, in search of 100 facts about our endlessly fascinating planet.

The subjects that fall under the umbrella of “facts about Earth” are nearly as expansive as Earth itself. Geology, biology, astronomy, and cartography, are all fair game—and those are just a few of the many -ologies, -onomies, and -ographies you’ll learn about below. 

Press play to find out more Earth-shattering facts, and subscribe to the Mental Floss YouTube channel for more fact-filled videos here.