NHPR and The Music Hall in Portsmouth present Writers on a New England Stage with author Steven Pinker. He spoke with NHPR's Peter Biello about his latest book, Enlightenment Now: The Case For Reason, Science, Humanism, and Progress. Pinker explores the positive theory that the world is actually getting better - with happier, healthier people living longer lives. Backed with extensive research and illustrated with informational graphs, Pinker outlines the promising forecast on the human