Science Accelerator http://www.scienceaccelerator.gov
Searches 12 databases of energy-related research
Searches 42 databases covering all fields of science but also more than 2,000 selected websites.
WorldWide Science.org (http://worldwidescience.org)
Searches 76 databases or portals from 65 countries and includes a translation feature for help with foreign language materials.
The PLANTS Database provides standardized information about the vascular plants, mosses, liverworts, hornworts, and lichens of the U.S. and its territories. It includes names, plant symbols, checklists, distributional data, species abstracts, characteristics, images, crop information, automated tools, onward Web links, and references.