Biology

The Encyclopedia of Life aims to increase awareness and understanding of living nature by gathering, generating and sharing knowledge in an open, freely accessible and trusted digital resource.

The major professional organization in the field. The "Learn About Microbiology" area is perhaps the most useful.

Excellent introduction to a variety of topics relating to microbes, focusing on their roles in different ecosystems. Good illustrations.

Foodborne pathogenic microorganisms and toxins are covered. From the FDA and the Center for Food Safety and Applied Nutrition.

An online text for introductory microbiology from a professor at a community college.

A wiki done by students and faculty on a range of topics relating to microbes, from phylogeny to mythology. The information is contributed by any registered user but is reviewed for accuracy. An easy-to-use site.

Fungi and the infections they cause are covered. Many photos. From a professor in Australia.

A wealth of information on fungi, primarily from a medical standpoint. Scroll down the home page to see the variety of ways to approach the topics.

Clear introductory coverage of the strange world of viruses.

Background on the variety of bacteria and also ways they are health threats and ways to fight them.

Late-breaking news in the world of microbes. Lots of surprisingly interesting stories, videos, and images. From the American Society of Microbiology.