This United States Geological Survey site focuses on water and its properties. The site contains activities for teachers and students, along with pictures, data, maps, and an interactive center where users can give opinions and test their water knowledge. Unique aspects of this site include the sections that contain student work and a picture gallery. There are links to other resources for students, ... Full description.

This report provides an overview of the exchange of greenhouse gases, their influences on climate, viability of ecosystems, distribution of biomes, quantities of surface- and ground-water, and some research projects in place to investigate these influences. Topics include lake-atmosphere carbon dioxide exchange, sequestering and exchange of atmospheric carbon dioxide in boreal and subalpine forests, ... Full description.

This portal provides information on the hazards presented to the Gulf and Atlantic coasts of the United States by hurricanes. A fact sheet summarizes some of the destructive effects and describes some of the more recent damaging storms. Other links direct site visitors to highlighted resources describing the extent and causes of coastal impacts of hurricanes, impacts on wetlands, coastal changes, ... Full description.

This resource provides a brief overview of the upcoming International Polar Year (IPY) and United States Geological Survey (USGS) initiatives and resources that help support the observance. Topics include a history of IPY (this will be the third IPY) and the role of the USGS in polar research. The education section provides links to USGS resources on glaciation, the North and South Pole, Alaska, climate ... Full description.

This fact sheet provides an overview of the gases emitted by volcanoes, which consist mostly of water vapor, carbon dioxide, and sulfur dioxide. Topics include reasons for studying them, potential hazards, methods for studying them, and some facts about the gases emitted by the eruption of Mount St. Helens. A downloadable, printable version is available. Full description.

This portal provides access to information on United States Geological Survey (USGS) research projects and other topics in coastal and marine environments of the United States, especially on the west coast and the Pacific Ocean. Research projects can be searched by topic, location, project title, or from a publications list. Other resources include an ask-a-geologist feature, the coastal and marine ... Full description.

This site describes the distribution and movement of water around, through, and above the Earth as water vapor, liquid water, and ice, with emphasis on the water cycle (hydrologic cycle). A summary data table provides an estimate of global water distribution in cubic miles and kilometers from all sources (oceans, ice caps, groundwater, lakes, etc.). There is also a link to a water cycle graphic available ... Full description.