List of Government Agencies, foundations, departments, etc.: http://www.officialusa.com/stateguides/government/department.html
National Park Service: http://www.nature.nps.gov/
USGS List of Websites to study Volcanoes and Earth Science : http://vulcan.wr.usgs.gov/Servers/earth_servers.html
National Science Foundation News and Discoveries: http://www.nsf.gov/index.jsp
Official US Time: http://www.time.gov/