If you’ve ever heard an owl hoot, it was probably at night. Why? Owls are nocturnal animals. That means they’re active at night and sleep during the day. However, not all owls hoot and, of those that do, hoots aren’t the only sounds they make. In …

Turtle, tortoise, and terrapin are all names for the hard-shelled, egg-laying reptiles in the taxonomic order Chelonia. Basically, they’re all turtles. The exact name used for a particular type of turtle, though, can vary depending upon where they live or where YOU live. People in different …

The culprit is bacteria. These tiny organisms just love your feet. In fact, they look at your feet the way you might look at an all-you-can-eat buffet. That’s right! Bacteria feed on your feet. They eat dead skin cells and the oils secreted through your …

Do you trust your own memories? We all know our memories get a little weaker over time. Many people even lose them because of illnesses. But did you know some people have memories that are completely false? They remember things that never happened. …

If you’re a fan of lizards, you probably already know that there are some types of lizards — called chameleons — that can change their color. Have you ever wondered why — and how — they can do this? Chameleons are lizards that …

tars, like the Sun, fill the universe. The core of a star constantly converts hydrogen, its fuel supply, into helium. This process, called nuclear fusion, makes stars shine so brightly. After billions of years of burning, a star will eventually use up its hydrogen fuel supply. When nuclear fusion stops, gravity pulls the star inward on …

But is Earth really the coldest planet in the Solar System? Astronomers will quickly tell you it’s not even close. In fact, being the third planet from the Sun makes Earth one of the warmer planets, and that’s a good thing for us humans. We wouldn’t …

Metal detectors can find hidden metal objects. The ultimate score would be a large metal chest filled with long-lost treasure. More likely, though, they’ll find coins dropped by other people on the beach. Most metal detectors make a sound when they find metal. …

Have you ever WONDERed what ZIP codes mean? They look like random numbers! However, people who sort and deliver mail know exactly what ZIP codes mean. Every number in your ZIP code helps mail carriers get your mail to your home or …

Why would dolphins need to use sound to see, though? Think about the times you’ve gone swimming. How well do you see underwater? With goggles, you might be able to see several yards in very clear water. However, in murky water, your visibility might be mere feet …