Using paper patterns, students are able to construct a model that depicts Karst topography, including typical features such as caves, limestone bedrock, sink holes, and springs. The accompanying Teachers Guide provides extensive background information about the dissolutional processes that form caves. Information is also provided about unique animals found in caves and the importance of understanding ... Full description.

The MYPond project is an investigation of the chemical reactions, biological processes and inflow/outflow balances found within a pond environment. Instrumentation has been established in two ponds near each other so that a variety of chemical and physical properties are measured at various depths at 15-minute time intervals. Data can be viewed either in real-time or accessed from an archive, and ... Full description.

The Deep Biosphere Laboratory at Goteborg University consists of about 10 people whose unifying interest is in microbial life in underground and sub-seafloor environments. Visitors to the site can access summaries of research projects, personnel information, and links to publications on the topic of underground and sub-seafloor microbes. Research topics include microbes in deep Swedish and Finnish ... Full description.

As concerns over water resources and the environment grow, the importance of considering ground water and surface water as a single resource has become increasingly evident. The natural processes of groundwater-surface water interaction and human influences on this interaction are presented here, touching on natural ground-surface water interactions as part of the hydrologic cycle, chemical interactions, ... Full description.

This is a fact sheet on the water quality programs directly administered by the USGS. USGS provides information on issues such as the suitability of water for public supply and irrigation, aquatic ecosystem health, effects of agriculture and urbanization on water resources, acid rain, and disposal of radioactive waste. There are hot links to several studies and to data available from USGS and other ... Full description.

BASINS is a multipurpose environmental analysis system for use by regional, state, and local agencies in performing watershed and water quality based studies. This new software makes it possible to quickly assess large amounts of point source and nonpoint source data in a format that is easy to use and understand. Installed on a personal computer, BASINS allows the user to assess water quality at ... Full description.

NeMO studies the dynamic interactions between submarine volcanic activity and seafloor hotsprings at an observatory called Axial Seamount. The research activities at NeMO provide an extraordinary educational opportunity, both from the daily reports from expeditions at sea and from creative learning materials based on NeMO results. The site features curriculum materials designed for high school and ... Full description.