We hear it all the time: "I can't use Wikipedia!" The following resources search credible encyclopedias, dictionaries, almanacs and more - the same ones you see sitting on the shelves in the library - and they are fully searchable and readable online. Think of them as your librarian-approved alterative to Wikipedia.
Having trouble picking a topic to research? These resources cover controversial, timely issues in a number of topics. They give background information, pro/con arguments, and tips for continuing research.
You will find a lot of information on topics in biology in these online databases. Some will be reference articles. Some will lead to journal articles, government websites and other useful resources.