Explore Wonders | Tag: improvement | Wonderopolis

Explore Wonders | Tag: improvement | Wonderopolis

Wonderopolis

Why Do Drink Lids Have Extra Holes?

Today's Wonder of the Day might have you saying, "Put a lid on it!"

#1821

Why Do Drink Lids Have Extra Holes?
Are All Inventors Scientists?

Today’s Wonder of the Day is a brand-new invention. Come check it out!

#1170

Are All Inventors Scientists?
Why Do Some Roads Have Tolls?

It might cost you a dollar to read today’s Wonder of the Day!

#997

Why Do Some Roads Have Tolls?
What Is a Patent?

Calling all inventors! We're taking a field trip to the patent office to find out how you can protect your next bright idea.

#99

What Is a Patent?