Science.gov is a portal to authoritative selected science information provided by U.S. Government agencies, including research and development results. There is also an excellent link to programs for science education.
The National Academies provided free access to its highly esteemed publications, encompassing all of the life sciences, from molecular genetics to biodiversity, and examines a wide range of issues, from improving education in biology to advising how researchers can equitably and efficiently share rare and costly research materials.
Many of the Academies reports also explore policy questions that arise from applications of biology, as in biotechnology and conservation biology. One recent report outlines the downward population trend of insect pollinators in the U.S. Read it online free at http://www.nationalacademies.org/morenews/20061017-2.html
The National Science Foundation (NSF) is an independent federal agency created by Congress in 1950 "to promote the progress of science; to advance the national health, prosperity, and welfare; to secure the national defense…" With an annual budget of about $5.5 billion, NSF is the funding source for approximately 20 percent of all federally supported basic research conducted by America's colleges and universities.
The National Academy of Sciences (NAS) is an honorific society of distinguished scholars engaged in scientific and engineering research, dedicated to the furtherance of science and technology and to their use for the general welfare.
The nation turns to the Health and Medical Division of the National Academies (formerly Institute of Medicine - IOM) for science-based advice on matters of biomedical science, medicine, and health. A nonprofit organization specifically created for this purpose as well as an honorific membership organization, the IOM was chartered in 1970 as a component of the National Academy of Sciences.