Why do dogs have an extra paw pad on their front legs?
These corn-chip-smelling paw pads serve a helpful purpose.
Why do stars twinkle? And do stars actually twinkle?
Get ready for some scintillating knowledge!
Why does your funny bone hurt when you hit it?
Hint: Youโre not actually hitting the bone.
What do antioxidants do and why do we need antioxidants if we need oxygen to survive?
Take a deep breath and then dive into the biochemistry that keeps you trucking along.
What is vinegar and how does vinegar preserve food?
And what exactly is the โmotherโ of vinegar?
What does it mean to darn socks?
Darning is a simple sewing technique used to mend holes or reinforce worn out spots on any knit clothing item, including socks and sweaters.
Do elevator โClose Doorโ buttons work?
It depends. If you're in the United States, probably not. If you're outside the U.S., probably so.
How do gas pumps know when to stop pumping?
I hope youโre feeling pumped for some physics!
Why do we rub our eyes when we are tired?
Itโs an instinct that prepares us for sleep. But you might want to think twice before doing it.
How are cosmetic expiration dates determined?
It turns out the U.S. has more of a โyou do youโ approach to consumer safety regulation.
How did early Polynesian explorers find islands?
No radio, no compass, no maps. How ancient explorers found islands in the middle of nowhere.
What does โadopt a highwayโ mean and how does it work?
What do these adoptive road parents have to do to earn those signs?
Why are skyscrapers made of glass?
Two important innovations allow us to scrape the sky with these glassy giants.