Science.gov is a one-stop portal for federal government science information. Over 200 million pages of science information from 14 federal agencies may be searched through a single query. How far we have come in the past decade!
You may not be aware that Science.gov was developed and is governed by the Science.gov Alliance , a group of science information managers who began working together to overcome the stovepipes of agency information in 2001. This unusual collaboration has taken a bottom-up approach throughout the development and operation of the site. All participating agencies have an equal voice in the process; all agencies manage their own content through a decentralized content management model. In addition, agencies maintain their own databases which are searched by Science.gov in real-time.
I am pleased to note that the Science.gov Alliance  and their "out of the box" techniques have served the science attentive citizen well for almost 7 years!