In the spirit of new launches, I thought I would mention that Science.gov 4.0 has launched. Science.gov provides a unified search of the government’s of scientific and technical information, including but not limited to Biology, Health and Medicine, Biotechnology, and Food Safety.

The new features 4.0 brings are: deep rank, refine results, result sorting, and email.

DeepRank uses information gathered from the full-text document, when available, to perform relevancy ranking. This is a "deeper" search and real- time ranking system that may take a little longer but returns results based on more information.

Refine results Once a search has been run, you have the option to refine your results by searching for another term or phrase within the original set of results.

Result sorting Once a search has been run, you have additional options to sort and view results by title, date or author as well as by relevancy rank and source.

E-mail results Once a search has been run, you have the option to e-mail the results to yourself or another person or listserv, along with an optional comment.

For more information on Science.gov go to http://www.science.gov