We asked an expert to help us investigate the adorable causes of the tongue-lolling phenomenon.

BIG QUESTIONS
There’s a surprising connection between the capital of the Philippines and mailing important documents.
There are several theories as to where this phrase came from—and none of them involves the nuts.
Are the airplane and Do Not Disturb modes on your smartphone really all that different? Discover the benefits of these two settings and how they diverge.
The difference between misinformation and disinformation boils down to the intent behind it (or lack thereof). Plus, a handy trick for knowing which term to use when the time comes.
News reports warn about the Santa Ana winds and their power to turn modest wildfires into conflagrations. Here’s why these wind patterns in Southern California can be so destructive.
The imposing pipe wrench with teeth was once made out of wood.
Are snow tires really worth it? Discover the real differences with all-season tires, including affordability, rubber tread, and more.
What are eggs, really? It's complicated.
Discover more about the origins of toenails—plus the real reasons why your toenails may be getting thicker and changing colors.
Every time a new year rolls around, people set out to better themselves. But why do we make these promises to ourselves, and where did this tradition come from? We can start by blaming the ancient Babylonians.
“Caffeine-free tea” isn't actually tea at all.
The proverb that empowers rude shoppers has been going strong for over a century. Who’s to blame?