In the Know

Have you ever been playing outside on a hot day when you notice your face and hair are all wet? What happened? Don’t sweat it—it’s just sweat! While you are at play your body is … Read more

Did you know that ice pops were invented by an 11-year-old boy? And it was an accident! He left a soda mixture out in the cold all night. It froze. In the morning, he licked … Read more

You might have seen people with wooden legs and metal hook-shaped hands in movies. These are early examples of prosthetics. A prosthesis replaces a body part. They are used by people who have lost a limb … Read more

Have you ever flown on an airplane? Sometimes the flight can get a bit bumpy. And it can seem to come out of nowhere. This can be alarming, but a recent study shows that it … Read more

Mount Everest is the highest point on Earth. It is 8,850 meters (29,035 feet) above sea level. Reaching its majestic peak is the ultimate challenge for climbers. With the climb comes many dangers. Avalanches are … Read more

Have you ever seen a 3-D printer at work? It is amazing! It prints layer after layer, one on top of another. Before your eyes, a detailed 3-D object takes shape. 3-D stands for three-dimensional. … Read more

What is chemistry? Is it a scientist in a lab coat? A flask with a colorful liquid in it? Yes. All of these things are chemistry. Chemists often work in a lab and use equipment … Read more

Did you know that we are in an ice age right now? It’s true! An ice age is a long period of time when Earth’s temperatures are colder and ice covers much of the land. … Read more

Fred Begay was born on the Ute Mountain Indian reservation in 1932. He was raised in the traditional Navajo ways. He learned their religion and how to hunt and farm. Begay was a clever child. … Read more

What is a mummy? When you think of a mummy, you might think about those you see in the movies. They are wrapped in cloth and shuffle around with their arms out. These mummies are … Read more