Amy's been reading her columns for longer than I have, but she's become as much of a must-read for me as Krugman and Herbert, mostly because she writes about science in a way that manages to be challenging and yet not so filled with jargon that it becomes meaningless to a lay person. Her column today is on mutation and evolution. She uses question "what would happen if mutation suddenly stopped?" as the premise for her piece, and then explains it in such a real-world way that even the most simple-minded evolution denier would be hard-pressed to refute her (assuming that said denier was arguing logically). If Judson isn't on your regular list of columnists/bloggers to read, she should be. She's a lot more interesting than that Stanley Fish guy.