Evolution vs. intelligent design
An excellent editorial by James Q. Wilson, explaining why evolution is science and intelligent design isn't, and why only the former should be taught in public schools:
What schools should do is teach evolution emphasizing both its successes and its still unexplained limitations. Evolution, like almost every scientific theory, has some problems. But they are not the kinds of problems that can be solved by assuming that an intelligent designer (whom ID advocates will tell you privately is God) created life. There is not a shred of evidence to support this theory, one that has been around since the critics of Darwin began writing in the 19th century.