Visitors can access general information on the greenhouse effect, how it works, and what impact human-produced emissions are having on the global climate. Materials presented here include discussions of the potential impacts of climate change, actions being taken to mitigate the effects, news articles and publications, tools for estimating emissions and calculating the benefits of reduction strategies, ... Full description.

This site has information about where the tectonic plates were located in the Pleistocene and throughout geologic time. You can view animations of the plates moving or download models. Full description.

This Environment Canada fact sheet highlights information about groundwater. The sheet starts with the definition of groundwater and aquifers, then discusses the hydrologic cycle, groundwater quality, contamination, and protection. A bibliography lists resources for further study. Full description.

Visitors can access information on a variety of water issues in Arizona, including the Colorado River, riparian areas, water conservation, water rights, and recreation. The Arizona Water Resources Research Center (WRRC) provides a glossary of water terms, a stream gauge map and a directory of water-related agencies and organizations, especially Arizona Project WET (Water Education for Teachers). Other ... Full description.

This site provides an explanation for cloud formation and seeks to correct myths or misconceptions about how clouds form. Water vapor, condensation, and evaporation are discussed in the context of dew-point temperature and saturation. Educators and anyone explaining cloud formation will find hints on how to present the correct information and avoid misinforming their audiences. Full description.

This NASA site contains a wealth of information about hurricanes, including how they are created, how they move, and the dangers they pose. Also included are sections that deal with naming of hurricanes, hurricane hunters, a VR trip through a hurricane, satellite instrumentation, and a video of hurricane Andrew. Full description.

In this article, The Why Files examines the possible finding of water ice on our Moon, and the implications for this discovery. The article discusses why scientists believe there is water on the Moon, how a neutron spectrometer picks up the unusual presence of hydrogen on the Moon which could indicate water, what scientists hope to use this water for, and where this water may have come from. A moon ... Full description.

This USGS site contains very useful descriptions about many aspects of ground water. The major topics include Ground Water, How Ground Water Occurs, Quality of Ground Water, Appraising the Nation's Ground-Water Resources, and a Glossary. This is a non-technical site, designed for use by the general public. Several charts and diagrams are also included in this site. Full description.

The National Weather and Climate Center presents snowpack data from snow courses and SNOTEL sites in the western United States as graphs and color-contoured maps. Historical and real-time data on depth of snowpack, snow-water-equivalence, and forecasts are available for individual sites and entire drainage basins. The site also includes information about how scientists collect SNOTEL data. Full description.

Surf Your Watershed is the Environmental Protection Agency's effort to provide a comprehensive center for geographically relevant information about drinking water regulations, drinking water publications, public water systems, ground water, and water quality and pollution issues. Resources include how to locate your watershed anywhere in the United States, state and tribal information, an index of ... Full description.