A cell happens to be the smallest unit of life, but there's a tremendous amount of activity going on within this very fascinating place. The talented people at the National Science Foundation (NSF) are well aware of this fact, and they have created this illuminating and interactive visual feature to help people learn about the cell's different components. On the homepage, visitors are presented...

Michigan State University's Center for Microbial Ecology hosts the Ribosomal Database Project (RDP), offering "ribosome related data services to the scientific community, including online data analysis, rRNA derived phylogenetic trees, and aligned and annotated rRNA sequences." Data, which may be used "for your own non-commercial research purposes," include Organism lists, Sequences (unaligned),...