From the Hydrology and Remote Sensing Laboratory of the USDA Agricultural Research Service (ARS) comes the ARS Water Database Web site. The database is a collection of precipitation and streamflow data from small...

This site describes the bacterium Arthrobacter and its classification, description/significance, structure, metabolism, ecology, cultivation, and references. This site also contains links to Virginia Polytechnic...

Approximately 12 million years ago, a massive volcano in the southwestern corner of Idaho erupted and spread a tremendous blanket of ash over a large area. Much of this ash settled over the grasslands of northeastern...

The Asian Partnership for the Development of Human Resources in Rural Asia (AsiaDHRRA) traces its roots to a workshop held in Thailand in 1974. This is a regional partnership of eleven different social development...

This site (part of naturalist Thomas J. Elpel's larger Wildflowers and Weeds website) exhibits clear photographs of members of the Dandelion Subfamily; and members of a number of tribes in the Aster Subfamily such as the...