This is an online reference guide about the Earth, its natural environments, and their interaction with society.
Explanation and links to the HGP mission and goals, ethical issues, and possibilities of human genetic research from the National Human Genome Research Institute.
A free science library and personal learning tool brought to you by Nature Publishing Group, the world's leading publisher of science. Scitable currently concentrates on genetics.
The National Center for Biotechnology Information
Provides access to biomedical and genomic information.
BIODIC offers the widest series of electron micrographs available on the web in the field of biology: over 1600 images are currently available in high resolution.
The Macaulay Library is the world's largest and oldest scientific archive of biodiversity audio and video recordings.
Images of weather, space, shore and coastal seas, and thousands of marine species.
Images from the National Science Foundation's Multimedia Gallery.
The Image Search is now fully integrated into the Science.gov search. If you wish to search only these sources, select Multimedia on the results page after you conduct your search.
The Micropolitan Museum exhibits captured images of micro-organisms.
Photos and line drawings of U.S. plants, including many cultivated or foreign taxa.