This site offers frequently asked questions about earthquakes, research on earthquakes, and more. Visitors can follow recent seismic activity around the world, view hazard maps, or learn what a geophysicist does.
The Toxic Substances Hydrology Program of the USGS performs research to improve characterization and management of contaminated sites,to protect human and environmental health, and to reduce potential future contamination problems. This site features fact sheets, reports, publications, and highlights of research findings and investigations. Topics include soil and groundwater remediation, agricultural chemicals, and hard rock mining wastes.
This interactive resource adapted from the National Park Service illustrates the difference between explosive and effusive volcanic eruptions as well as the hazards that can result, including lahars, tsunamis, and lava flows.
No restrictions on your remixing, redistributing, or making derivative works.
Give credit to the author, as required.
Your remixing, redistributing, or making derivatives works comes with some
restrictions, including how it is shared.
Your redistributing comes with some restrictions. Do not remix or make
derivative works.
Copyrighted materials, available under Fair Use and the TEACH Act for US-based
educators, or other custom arrangements. Go to the resource provider to see
their individual restrictions.