Find an array of environmental and science-based lesson plans, activities and ideas from the EPA, other federal agencies, and external organizations.

Learn about the task force formed to help the public understand the causes and effects of eutrophication in the Gulf of Mexico.

EPA site offers answers to what nonpoint source pollution is as well as provides links and information as to what concerned citizens can do about it.

Provides information on what to do after a flood to protect well water from contamination, the testing of private well water, and protecting private well water.

This interesting resource that discusses the major causes of wetland degradation and destruction and its impact on our life.

Provides a brief overview of the Clean Water Act. Includes links to its history and to information about compliance and enforcement.

This resource provides information on watersheds, maps, activities, and links to local watershed information.

Let your students discover how much water they use in one day. Then allow them to brainstorms ideas on how to conserve that water and why it is important. PDF format.

Downloadable booklets with basic information about the U.S. water supply, e.g., where our drinking water comes from.

Learn about EPA's work to protect and manage water resources and what you can do to help.

In this transcript of an interview filmed for the PBS series "Evolution," scientists Ted Daeschler and Neil Shubin describe the discovery and significance of some of their key fossil finds.

A university-level course that looks at the structure of the solar system, the sun, the planets, and other bodies in space. Includes course readings, assignments, and study notes.

This is a nice explanation of geologic time and Earth's major eras. Although this site is designed for younger students, it is mostly text with few images.

This Interactive NOVA: "Earth" video segment looks at ancient organisms that lived anaerobically, the origins of photosynthesis, and the new forms of life this process made possible. [1:39]

An equation for the law of universal gravitation is stated. The weight equation (W=m*g) is related to the law. An interactive Javascript form allows the user to practice determining the force of gravity and the acceleration of gravity for various locations about the earth.

This informative site lists four stages in the development of coal. Different types of coal mines are explained in this site as well.

An earth science collection where students can explore earthquakes, volcanoes, and more natural phenomena. The collection uses videos and interactive activities to investigate our dynamic planet and earth systems.

Written for younger students, this site explains biodiversity and links to easy to understand explanations of species and genetic diversity.

This one-page explanation of the rock cycle contains a very helpful diagram and useful explanatory notes. Site explains how rocks are made and broken down.