The ultrasonic training instruments are easy to use. But there’s a dark history behind their inventor—and their initial purpose.

MF EXPLAINS IT ALL
Learn the key differences between sanitizing, disinfecting, and sterilizing to properly clean your home and protect your health.
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.
Meteorological organizations have strict naming protocols for tropical cyclones and hurricanes. Not so for wildfires, which can end up being named for the local dump.
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.
Fido’s fascination stems from a unique mix of instinct and happenstance.
The emo vibe isn’t an aesthetic choice—it’s the result of degrading infrastructure.
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.
Many drivers think that giving your engine time to reach its normal operating temperature is easier on your car than hitting the gas as soon as you turn the ignition on. Many drivers are wrong.
Prefer Google Chrome but not the Google search engine? That’s no problem.
On the possible origins of ‘wazoo,’ and why things are said to tumble out of it.
They do it because they love you.
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.