In the 1950s, a doctor named Ian Donald in Glasgow, Scotland, had a bright idea. Shipyard workers used a machine ...

In 1686, a Sicilian man named Francesco Procopio dei Coltelli opened a café in Paris called Café Procope. He sold ...

Here is a real situation that happens often in the United States. A counselor in Texas has a license with ...

In Caracas, the capital of Venezuela, there is a 45-story tower called Torre David. It was meant to be a ...

Asthma is a health problem that makes it hard to breathe. It can make the airways swell and become narrow. ...

An animatic is a simple video that shows how a story may look. It often uses still pictures with sound. ...

Ali lives in Pakistan. He uses a phone made with parts from other countries. He watches cartoons from other places. ...

Imagine a scientist wants to look at a tiny piece of a leaf. The leaf has very small parts that ...

Have you ever felt sad when your friend got a new toy? Or have you felt worried when your best ...