Science.gov - Science.gov searches over 60 databases and over 2200 selected websites from 15 federal agencies, offering 200 million pages of authoritative U.S. government science information including research and development results.
U.S. Environmental Protection Agency - Resources to protect human health and the environment.
Envirofacts - One-stop source for environmental information via the Environmental Protection Agency.
Environmental Impact Statements Database - Provides information about EISs prepared by federal agencies, as well as EPA's comments concerning the EISs.
Toxicology Information - Resource for searching databases on toxicology, hazardous chemicals, environmental health, and toxic releases.
Climate, NOAA - NOAA experts provide data, tools and information to help people understand, prepare for and adapt to our changing climate.
Climate Resilience Toolkit - Tools, data, case studies, and training to support risk-informed decisions.
National Climatic Data Center - The NCDC maintains the world's largest climate data archive and provides climatological services and data to every sector of the United States economy and to users worldwide. Records in the archive range from paleoclimatology data to centuries-old journals to data less than an hour old.
Intergovernmental Panel on Climate Change - The United Nations body for assessing the science related to climate change.
U.S. Geological Survey - A science organization that provides impartial information on the health of our ecosystems and environment, the natural hazards that threaten us, the natural resources we rely on, the impacts of climate and land-use change, and the core science systems that help us provide timely, relevant, and usable information.
USGS Publications Warehouse - Provides access to over 130,000 publications written by USGS scientists over the century-plus history of the bureau.
Water Resources of the U.S. - Collects and disseminate reliable, impartial, and timely information that is needed to understand the nation's water resources.
Weather and Climate Collections - From the NOAA Library.