Contained on this page are satellite images pointed over different severe storm and special weather event areas. Each event has imagery that has been captured in the visible, infrared and water vapor frequencies. Locations vary depending upon current weather events. Full description.

This applet presents a visualization of the albedo of the earth. It is one of a series for a textbook. Users can adjust the speed of the visualization. Full description.

This distance learning course is a 28-session videotape series that explores wildlife conservation and management in the United States and throughout the world. The videotapes include lectures by professors from Oregon State University, Eastern Oregon University, and by specialists from state and federal natural resource agencies. The course is divided into four parts: 1) social and political aspects ... Full description.

This is a simpe Javascript program that allows users to calculate the reflection of solar radiation from various surface conditions on Earth. Full description.

Until very recently, planetary scientists had thought that Mars is a cold, dry planet. Then in the summer of 2000, NASA released images from the Mars Global Surveyor showing evidence of very recent seepage of ground water from crater and valley slopes in the planet's southern hemisphere. It seems that substantial reservoirs of the water that once may have run so copiously on the surface may still ... Full description.

NASA and Russian scientists have been selected to take the search for life in the solar system to the frozen reaches of Earth. Life forms (from diatoms and bacteria to mammoths) preserved in the Siberian permafrost can yield evidence about how life has changed on the molecular level and provide a treasure trove of ancient enzymes, proteins, and biochemicals. The ecosystems of the ice and permafrost ... Full description.

Access to and control of the Shatt-al-Arab waterway has been an ongoing conflict between the countries of Iran and Iraq. This resource explores the major issues associated with this conflict; history, religion, navigation rights and trade. Full description.

This slide show explores the threats to the Chinook salmon population in the Stillaguamish River watershed of Snohomish County, Washington. Topics include the status of the present population, factors contributing to the decline of the population, habitat needs for healthy salmon, and steps that are necessary for the recovery of the population. Full description.

This guide to organisms and environmental issues of the Chesapeake Bay and Mid-Atlantic Coast addresses restoration and protection of bay habitats, bay grasses, harmful algae, bay monitoring efforts, and organisms that live in the bay. There is also education section that features materials for teachers, students and volunteers, frequently asked questions about the bay, and a set of links to related ... Full description.

The world's food production depends on the availability of water, a precious but finite resource. Users can learn about the need for more efficient usage of water for irrigation, and about the activities of the Water Resources Development and Management Service, which is concerned with sustainable use and conservation of water in agriculture. Links to other sites related to irrigation practices and ... Full description.