A simple description of how corn was discovered and used by the Indians and how it came to be an important food throughout the world.

Explains how the various orders and suborders of dinosaurs were similar and different in structure and appearance.

Explains the phases of the moon--the changes that seem to happen to it as it goes around Earth. Can you see the moon? Does it look like a big round ball? Or is it just a sliver of light in the sky? The moon seems to change. But it doesn't really. The moon revolves around the Earth. It takes about four weeks to make the journey, and as it travels round we can only see certain parts of it. Try the simple experiment described inside using an orange,...

Describes the physical characteristics of a variety of snakes and how they hunt, catch, and eat their prey.

Describes how fireflies make their light, tells how to catch and handle them, and notes several interesting uses for firefly light.

Describes various scientific theories which explore the extinction of the dinosaurs.

Describes the life cycle of an apple from its initial appearance as a spring bud to that point in time when it becomes a fully ripe fruit.

Explains the basic characteristics of weather--temperature, humidity, wind speed and direction, air pressure--and how meteorologists gather data for their forecasts.

Even though Mount Everest measures 29,028 feet high, it may be growing about two inches a year. A mountain might be thousands of feet high, but it can still grow taller or shorter each year. Mountains are created when the huge plates that make up the earth's outer shell very slowly pull and push against one another. Read and find out about all the different kinds of mountains. The earth's continents rest on plates that move slowly across our planet's...