This is the text of the essay "Nature" by Ralph Waldo Emerson, the foundation of transcendentalism, a belief system that espouses a non-traditional appreciation of nature. Transcendentalism suggests that the divine, or God, suffuses...

Using the random function with probability and non-uniform distributions in code.

Overview of the types of natural resources and a list of natural resources found in India.

[Free Registration/Login may be required to access all resource tools.] What nonrenewable energy resources and fossil fuels are and how they form, and the drawbacks of using nonrenewable energy resources.

How can you classify energy sources?

This mini-lesson at the Evolution and Nature of Science Institute site from Indiana University provides a criteria by which students can evaluate an idea or explanation for scientific credibility.

Learn about the history of how humans have used tools to meet their need for food, beginning with the ancient tools our ancestors used millions of years ago. Non-human primates also use some tools.

Take a trip back to three million years ago and learn about the different animals and their land that relate to the evolution of man. This article offers a look at the challenges and changes faced by our ancestors and suggests several...

Flip this interactive card to start learning about the Cretaceous Period. Answer multiple-choice and fact-or-fiction questions and review some fast facts about this period that marked the end of the line for all non-avian dinosaurs.

This gives a brief explanation of what natural gas is and tells how it is formed, how we harness it and how much it takes to heat a home or an urban area.

In this lesson plan, students will identify the Earth's natural resources and classify them as renewable or non-renewable. They will simulate the distribution of resources and discuss the fairness and effectiveness of the distribution....

Point of View is television's longest running showcase for independent non-fiction films. This particular feature provides insight regarding alternative means of energy, transport, and the consumption of natural resources. Video, games,...

Discover the mysteries of the native grasses of coastal California. Content includes a focus on identifying, finding, and growing native grasses.

A look at Neanderthals, including their appearance, their life during the Ice Age, and their extinction. Follow suggested BBC and non-BBC links for further reading.

Discusses the non-nutritional ingredients in vitamins and explains the differences between natural and synthetic vitamins. The examples of vitamins C and D are looked at in more detail.

This list of nature of science lessons from the Indiana University includes three links to lessons under the heading "Realm and Limits."

This site describes what sinkholes are, how they form, problems associated with sinkholes such as flooding and pollution, and sinkhole locations. It discusses the two types of sinkholes, the main differences between karst and non-karst...

Finding alternative energy sources is a challenge facing the leaders of today and tomorrow. Andy Darvill has created an impressive resource, summarizing various renewable and non-renewable energy resources.

This essay discusses the topics of public goods, private goods, excludability of goods, and rivalry of goods.

Many different kinds of organisms live in water. Excess nutrients can cause over-abundant growth of some organisms living in water and non-point source pollution is a major threat to water supplies in the United States. In this...

A PowerPoint slideshow converted to a PDF, with six slides per page. It explains what metamorphism is, the distribution of metamorphic rocks, the agents of metamorphism, the types of metamorphism, metamorphic grades or degrees, how...

Non-profit humanitarian organization dedicated to saving lives by "eliminating hunger through prevention, detection, and treatment of malnutrition, especially during and after emergency situations of conflict, war and natural disaster".

Non-profit "global humanitarian aid organization of the United Methodist Church". Their mission "is to alleviate human suffering-whether by war, conflict or natural disaster". Find articles, photos, and more.

This site from The Nobel Foundation tells the scientific work which earned Louis de Broglie the Nobel Prize in Physics. Here, you can read the Presentation Speech in which Professor C.W. Oseen praises Louis de Broglie's work and de...