This California State University Northridge essay on the "Nature of Science, the Scientific Method, and Measurement" includes a historical perspective.

Use the scientific reasoning and critical thinking to take an in-depth look at the basics of biology.

Students examine paleontology, the study of ancient life on Earth. Some topics explored are vertebrates, invertebrates, and plants.

Online exhibit of scientific illustrations from rare books of natural history. Earliest examples date from the fifteenth century.

A good explanation of basic quantum theory.

Find a wealth of scientific information on the status of biodiversity in the world today, the threats it faces, and why it is critically important to preserve it.

This guide focuses on four physical science topics that fascinate children and scientists alike. They are motion, magnets, sound, and light. With your guidance and support, these topics provide children with many opportunities to explore...

Gain a perspective on the origins of the contemporary environmental crisis, where an awareness of the environment came into being.

Presents a list of the nineteen worst natural disasters to strike Japan, along with descriptions, year, number of casualties, and where each occurred. Japan has been hit by earthquakes, tsunamis, volcanic eruptions, typhoons, blizzards,...

College-level instructor's notes describing taxonomy. Explanations and images give a chronological history of the science of classifying organisms.

This guide focuses on everyday substances and how we can change their properties by adding heat or cold, physically manipulating them, or mixing them together.

This BBC "hot topic" contains a description of the types of computer viruses. It also provides different ways to prevent or eliminate computer viruses.

Information about Leonardo da Vinci's observations of the natural world. An insightful commentary on the scientific achievements of the Renaissance.

Read about the life and work of Albert Einstein, including details from his childhood and what he said about life just before he died.

Through this interactive module, history has shown that the multifaceted aspects of nature have been overlooked many times in the past. And thus, our pursuit to control our environment has failed and left us wanting. What does the future...

Organ Pipe Cactus National Monument in the Sonoran Desert, in Arizona, was declared a national monument to preserve the ecological wonders it houses. Peruse the history, culture, nature and science. Teachers, be sure to check out the...

A biography of Dr. Charles Liu, an astrophysicist at the American Museum of Natural History focused on his drive to become an astrophysicist.

A review of meteorites, what they are, what types there are, and a collection of reading resources to understand more about these objects falling from the sky.

Built by the Sinagua nearly 1000 years ago, this incredible structure stands tucked into the limestone cliff in the Verde Valley of Arizona. Be sure to look at the history, culture, photos, nature and science provided as well as the...

The Coronado National Memorial, found in Hereford, Arizona, is recognized by the National Park Services to remember the historical and cultural significance of Francisco Vasquez de Coronado's Expedition in 1540-1542. The region also...

For over 10,000 years folks have been drawn to the Guadalupe Mountains in western Texas originally for its beauty, resources, and in more recent years its history. One of the most fascinating features to this national park is that in the...

For over 10,000 years folks have been drawn to the Guadalupe Mountains in western Texas originally for its beauty, resources, and in more recent years its history. One of the most fascinating features to this national park is that in the...

From ABC News in Science, Jennifer Viegas's article covers results from a recent study in which a female bonnethead shark was able to reproduce without the presence of a male shark.

This site from Fordham University is an exerpt from Newton's famous "Principia."