This site offers links to maps, posters, globes, and CD-ROMS showing seafloor topography, gravity anomalies, and bathymetry. The images were derived from GEOSAT and ERS satellite data and bathymetric surveys performed by the U.S. Navy. Full description.

The homepage of the Union of Concerned Scientists provides visitors with an overview of the science community's concern with environmental issues, energy policy, scientific integrity, and public health. Materials include news articles, reports, and suggestions for people who wish to become active in promoting these issues. Full description.

This guide presents introductory information about satellites and remote sensing and their uses in meteorological observations and forecasting. Topics include geostationary and polar orbiting satellites, orbital coverage, architecture, instruments, and the types of data they produce. A tutorial on interpreting satellite images is also included. Full description.

At this site, users can access and compare data from a large selection of spacecraft, instruments, and ground-based facilities. Most data is related to studies of solar wind, other particle emissions, and Earth's magnetic field. Full description.

The Earth Observing System (EOS) consists of a series of Earth-observing satellites, a data system, and teams of scientists who will study the data. Educators can access a set of links to educational materials and publications, and real-time satellite tracking data. Other materials include mission profiles, information on the 24 measurements taken by EOS, research papers and reports, news articles, ... Full description.

This portal offers access to data on recent earthquakes and volcanic activity in the Pacific Northwest, particularly Washington and Oregon. Materials presented here include catalogs and data from previous earthquakes, including historic events, information on earthquake hazards and research activities of the PNSN, and links to news articles, frequently asked questions, and educational materials. Full description.

This document discusses the mission of ICESat, the benchmark Earth Observing System satellite intended to measure ice sheet mass balance, cloud and aerosol heights, topography, and vegetative cover. Questions of particular interest to the mission include: is sea level is rising?; are the Greenland and Antarctic ice sheets growing or shrinking?; are ice sheets are capable of causing large, rapid changes ... Full description.

This document discusses the history of mass extinctions throughout geologic time, their role in the evolutionary process, and a mathematical model that demonstrates how the evolutionary process might interact with environmental stresses to produce a distribution of extinctions similar to that seen in the fossil record. Full description.

This publication provides an overview of two NASA funding programs, the National Space Grant College and Fellowship Program (Space Grant) and the Experimental Program to Stimulate Competitive Research (EPSCOR). A listing of contacts for these programs in all 50 states (20 states for EPSCOR), the District of Columbia, and Puerto Rico is provided, as well as a link to the Space Grant homepage. Full description.

This press release examines evidence of a possible new triggering mechanism for coronal mass ejections (CMEs) from the Sun. Scientists using data from the Yohkoh and SOHO satellites noticed that interconnecting X-ray loops, as they disappeared, were followed by looplike CMEs that erupted off to one side. Full description.