Diplomats at the United Nations got a dose of data-driven positivity this week from Harvard psychology professor Steven Pinker, who delivered a history lesson to prove the human condition is actually more peaceful and more prosperous than ever before. The world, Pinker told the gathering of officials ... is a better place than ever, but our perspective - and the way the news media convey events - needs to change. Pinker's most recent book, Enlightenment Now: The Case for Reason, Science, Humanism and Progress," presents facts that demonstrate how life around the globe, statistically, is improving. The psychologist measures a range of qualities to define progress; life, health, sustenance, prosperity, peace, freedom, safety, knowledge, leisure, happiness. As those have increased over time on aggregate, Pinker argues, humanity is making progress. His data paint a clear picture, over the course of centuries, of life expectancy increasing, deaths by famine falling, the world's gross earnings rising and extreme poverty falling. Pinker said the world has become freer, too, with dictatorships and autocracies decreasing in number. Pinker concluded in his remarks that we are collectively depressing ourselves for lack of a complete, fact-based view with full appreciation for what came before. He said the media and intelligentsia have been complicit in the depiction of modern Western nations as unjust and dysfunctional.