Agency for Healthcare Research and Quality  

Aging Resource Center

Alzheimer's Association

American Association for the Advancement of Science

American Cancer Society

American Chemical Society

American Diabetes Association

American Federation for Aging Research

American Psychological Association - Science Directorate

Aquatic Network Grants and Funding

Arthritis Foundation

Center for Disease Control and Prevention

Charles A. Dana Foundation, The - Science and health grants support brain research in neuroscience and immunology and their interrelationship in human health and disease.

Commonwealth Fund  

Defense Advance Research Project Agency - the central research and development organization for the Department of Defense (DoD). It manages and directs selected basic and applied research and development projects for DoD, and pursues research and technology where risk and payoff are both very high and where success may provide dramatic advances for traditional military roles and missions.

Earthwatch Institute - http://www.earthwatch.org/  

Environmental Education on the Internet - a resource for finding grant opportunities whose major component is in environment education.  

Environmental Protection Agency (EPA) - one of EPA's guiding principles to fulfill its mission to protect human health and the environment; give access to scientific information that may be useful in understanding and protecting our environment.  

Grantmakers in Health Searchable Database

GrantsNet - a resource to find funds for training in the sciences and undergraduate science education. Through the support of HHMI and AAAS, this service is completely free.

Howard Hughes Medical Institute

The Thomas F. and Kate Miller Jeffress Memorial Trust - supports basic research in chemical, medical, or other scientific fields through grants to educational and research institutions in the Commonwealth of Virginia. Grants are given to assist scientists in such institutions to conduct investigations in the natural sciences, generally considered to include chemistry, physics, biology (with the exception of field studies, classification, other largely observational studies), studies in the basic medical sciences, such as biochemistry, microbiology, and others.

Mineralogical Society of America

National Academies - Advisors to the Nation on Science, Engineering, and Medicine

National Aeronautics and Space Administration

National Fish and Wildlife Foundation

National Institute of Health (NIH) - provides grants news, applications, grants policy, award data, research training, research contracts, and the CRISP database, a searchable database of federally funded biomedical research projects conducted at universities, hospitals, and other research institutions.  

National Institute of Mental Health

National Institute of Standards and Technology (NIST) - mission is to develop and promote measurement, standards, and technology to enhance productivity, facilitate trade, and improve the quality of life; conducts and supports scientific and engineering research in disciplines ranging from chemistry and physics to information technology.