Science & Technology

Earthworms play an important role in many ecosystems, breaking down rotting organic matter into its simple components for use by plants. While earthworms may seem simple because they lack many visible external organs, they have complex inner organs including five…

A circle is a geometric form of which every point on the outside of the circle is the same distance away from the center. The distance around the edge of the circle is called the circumference. The distance from one…

Grasslands make up one of Earth’s major terrestrial biomes. Dominated by grasses and shaped by other biotic factors, different types of grasslands exist in tropical and temperate climates. Tropical grasslands cover much of Africa, Australia, South America and India, including…

If you live in the United States or the United Kingdom, you might encounter a measurement known as the square yard. (In other parts of the world, you’d be much more likely to encounter the square meter.) A square yard…

Almost everyone watches clouds, among the most fascinating and easily observed of all weather phenomena. Clouds form through the process of condensation when water vapor, primarily from the oceans, rises into the atmosphere where it cools and condenses into cloud…

Thousands of forms of water contribute to the beauty of the United States. These range from the major oceans to bays, sounds, inlets, rivers, streams, straits, ponds, falls, creeks and tributaries across the 50 states. Exploring them all could take…

Some animals – horses, say, or rabbits – eat only plants (herbivores), others – such as tigers or pythons – only meat (carnivores), but omnivores aren’t so choosy: They consume both plant and animal matter. Omnivores often boast less-specialized dentition,…

An ecosystem is composed of two main components: biotic and abiotic factors. Biotic factors are the living parts of the ecosystem, such as plants, animals, insects, fungi and bacteria. Abiotic factors are the non-living parts of the ecosystem, which influence…

Measurements aren’t always given to us in the units we need. If you have a measurement that is accurate to a tenth of a foot, like that used by some laser measuring equipment, you can quickly convert it to inches…

Most people know that if they leave bread out for a long time, it will begin to grow mold. However, they may not know much about what mold is, how it forms or why. There are different types of bread…