Mental Floss

BIG QUESTIONS

There’s a science behind all those colors.

The chemistry behind the vibrant colors of fireworks is another reason to “ooh” and “aah” at the sky this Fourth of July.

Ellen Gutoskey








Whether you enjoy the velvety skin on peaches or peel it off, you may wonder why they developed fuzz in the first place. 

Michele Debczak
There's a multitude of pencil types out there.

Almost every syllabus, teacher, and standardized test requires a No. 2 pencil. Are there other choices out there?

Bryan Dugan


Why so blue?

Unpacking the reason hyperlinks are blue requires dipping into early internet history.

Ellen Gutoskey


Ever wonder what your dog finds so tasty about grass?

A dog that eats grass frantically may be trying to vomit—but the behavior doesn't automatically warrant a trip to the vet.

Michele Debczak




Stick to listening to your pre-downloaded podcasts.

The Federal Aviation Administration (FAA) bars the use of all transmitting devices in the off chance that transmissions could interfere with a plane’s navigation and communications equipment and cause system malfunctions.

Ethan Trex






Sorry cat, the secret is out.

Cats do fart—but their flatulence is usually quiet. Veterinarians explain why.

Jake Rossen


There's a good reason you don't see baby pigeons.

To city dwellers, it might seem that pigeons multiply magically: All the birds swooping down at us, or scurrying out of the way when we walk, are fully grown. How come we never see baby pigeons anywhere?

Erin McCarthy