From Slate, a special section on the American way of dentistry — a look at the coming crisis; and 80 over 80: The most powerful octogenarians in America. PopMatters celebrates its 10th birthday with essays picking apart just about every aspect of popular culture and how it fits in and reflects with our modern-day society. Technorati’s State of the Blogosphere 2009 report is now out. How sofas changed the world: A review of The Age of Comfort: When Paris Discovered Casual — and the Modern Home Began by Joan DeJean. Behavioural economics has been the toast of both politicians and publishers in recent years, but the emperor’s new clothes are starting to look threadbare (and more on Superfreakonomics). From Obit, a review of Mortal Coil: A Short History of Living Longer by David Boyd Haycock; and is aging an inevitability or is it a disease? Self-portrait without cigarette: Who on earth wants to know what a columnist looks like? From New Scientist, probably guilty: Bad mathematics means rough justice. Here's the first Good 100, a collection of the most important, exciting, and innovative people, ideas, and projects making our world better. Erin McKean on the case for Dictionary Day. Brevity editor Dinty W. Moore is pleased to have published what he believes to be the shortest essay ever. Point, click, kill: Popular Science goes inside the Air Force's frantic unmanned reinvention, the struggle to train thousands of drone pilots virtually overnight. From Chronicles, Thomas Fleming on the “sin” of humility. From TNR, your babysitter's family is stranded on the roof of a flooded building in the Philippines — what do you do?