Professor James Collman of Stanford University has provided an excellent resource for all of us who try to help our students and the general public to discriminate between valid science and the bogus "scientific" claims that pervade television, the Internet, the grocery store, and especially the "health food" store. Collman points out that "organic" food (as opposed to what?) is not necessarily better than the alternatives, and that "natural" does not imply "safe". He takes a largely positive position on genetic modification of food, and clearly explains how he arrives at it. Describing both food and drugs, and environmental problems such as stratospheric ozone depletion and climate change from the standpoint of a chemist, he provides writes clearly and persuasively. He didn't persuade me that the international concensus against climate change is likely an overreaction, but he sounds like a fellow with whom you can reason.