Have You Ever Wondered... How does a calculator work? When was the calculator invented? How big were the first calculators?

Have You Ever Wondered... What does a thermal conductor do? How does a thermos keep hot stuff hot and cold stuff cold? What does an insulator do?

Have You Ever Wondered... How does a species become endangered? How many species are on the endangered species list? What can you do to help protect endangered species?

Today’s Wonder of the Day was inspired by Tripp. Tripp Wonders, “ Who Was Leonidas? ” Thanks for WONDERing with us, Tripp!

What Is in Dog Food?D o you have a dog? If so, you're probably very familiar with dog food. Even if you don't have a dog of your own, you probably have a friend or family member who has a dog. Have ...

Today’s Wonder of the Day was inspired by Hunter. Hunter Wonders, “ what is a civil right? ” Thanks for WONDERing with us, Hunter!

Have You Ever Wondered... What is the most popular book of all time? Which book series has sold the most copies? Do we have reliable sales figures for all books?

Have You Ever Wondered... How did April Fools' Day begin? What is a “fool's errand"? What are some of the best April Fools' Day hoaxes of all time?

Have You Ever Wondered... Why is it called an eggplant? What other foods are most closely related to the eggplant? Can you make some dishes that feature eggplant?

How Do We Wonder?C alling all Wonder fans—today’s Wonder is for you! If you’re here, you already know how much you can learn and how much fun you can have on Wonderopolis. But have you ever wonder ...

Who Was Grace Lee Boggs?W e learn in school about historic U.S. figures who fought for social and civil rights. Dr. Martin Luther King, Jr., Angela Davis, Malcolm X, and Rosa Parks were all famous for ...

Today Wonderopolis is exploring the tradition of the quinceañera. Put on your party shoes and join us as we celebrate this very important sweet 15.