In recent years, there has been much concern about the world's reliance on ...More

If you go outside on a windy day, you realize just how strong air can be. I...More

Cell phones have changed the way people live, work, and communicate with ea...More

There are hundreds of islands on Earth, from the isle of Manhattan to the i...More

Nearly every home has a refrigerator to keep foods tasty and safe to eat. B...More

Among recent concerns about the use of nonrenewable fuels such as oil and c...More

When you walk into a room and flip a light switch, a lightbulb turns on, il...More

The Moon is very far from Earth. Yet, scientists have been able to get sate...More

When people get hungry, they eat a meal. All animals and plants need water ...More

When you step into a full bathtub, you learn a lot about displacement of wa...More