What Is a Rube Goldberg Machine?H ave you ever seen a Rube Goldberg machine in action? You probably have, even if you didn’t know what it was. A Rube Goldberg machine is a that uses a chain reaction ...

W onder Friends already know that birds of a feather flock together. But what do you call that flock when the birds of a feather are starlings? Give up? It's called a murmuration. Have you ever seen a ...

How Does the Electoral College Work?E very four years, Americans head to the voting booth to cast their votes for their choice for President of the United States. As the election draws near, the news ...

What's Your Favorite Ice Cream Flavor?S ome people celebrate September 22 as Ice Cream Cone Day because they believe that the ice cream cone was invented on September 22, 1903. As it turns out, though ...

I t's not the heat, it's the humidity!" Have you ever heard someone say that on a warm, muggy day? As you'll see soon, there's a lot of truth in that statement. To understand humidity, you first have ...

What Is the Space-Time Continuum?W hen you read today's Wonder of the Day question, what comes to mind? Do the words "space-time continuum" conjure up thoughts of light sabers from Star Wars and ...

Do Robots Wonder?D o you interact with any robots on a daily basis? Really think about it. In today’s world, robots are becoming more and more common in homes and schools. Maybe you’ve seen robots ...

What Causes Mudslides?W henever a large group or rocks tumbles down a slope, geologists call it a landslide. When huge amounts of snow rush down the slope of a mountain, scientists call it an ...

How Smart Are Vending Machines?O n a hot day, there’s nothing quite like dropping some change into a vending machine and listening as a cold drink makes its way to the exit chute. It’s hard for most ...

Why Do People Keep Pets?D o you have a dog at home? If so, you know that special feeling you get when you arrive home after a long day of school to be greeted with a wagging tail and a few excited ...

Who Invented Math?W e're sure that more than one student has wished that he could travel back in time and prevent someone from inventing math. Of course, that same wish probably has been made with ...

What Is Cryptozoology?B igfoot. The Yeti. The Loch Ness Monster. Do you know any of these names? If so, you may be able to guess what today’s Wonder of the Day is about. That’s right—today, we’re ...