Rolling Stone magazine, which I'm proud (enough) to let everyone know I've subscribed to for the last 20 years, has published a list of 100 "Agents of Change" in its latest issue. Rollings Stone's list is, as always, something fun to mull over, debate, cheer for, complain about, and tear apart. This time around, they did get a few things right. Barack Obama is number one on the list, for example, and Michael Pollan is on it too.