NASA

NASA's Earth Science (ESE)
https://science.nasa.gov/earth-science

NASA Earth Science Technology Office (ESTO)
https://esto.nasa.gov

NASA Climate Science
https://climate.nasa.gov

Eyes on the Earth
https://eyes.jpl.nasa.gov/earth/index.html

JPL

JPL Science Division
https://science.jpl.nasa.gov

JPL Climate Sciences
https://climatesciences.jpl.nasa.gov

Other

U.S. Geological Survey
https://www.usgs.gov

Caltech Seismological Laboratory
http://www.seismolab.caltech.edu