The biggest episodes of the past have altered the course of human events, according to researchers. An emerging one is drawing historic comparisons. By Chico Harlan Mr. Gore is still giving the slide ...

Visit NAP.edu/10766 to get more information about this book, to buy it in print, or to download it as a free PDF. This document explains that there are well-understood physical mechanisms by which ...

Reuters, the news and media division of Thomson Reuters, is the world’s largest multimedia news provider, reaching billions of people worldwide every day. Reuters provides business, financial, ...