Interested in evolution, but unsure how to narrow the topic? These links, courtesy of Harvard University, should give you plenty of good ideas.
For an opposing view, take a look at this page about the evolution controversy.
Into dinosaurs? Take a look at The Dinosauria, a site at U.C. Berkeley that dispels dinosaur myths and features special exhibits.
Did your reading of Gould's work whet your appetite for more information about natural science? The Academy of Natural Sciences offers a wealth of information, starting at its homepage.