On the evening of Sept. 26, two interesting things happened. First, Hillary Clinton won a decisive debate victory over Donald Trump in the first presidential debate, as judged by prediction markets (and later, by polls). Second, financial markets abruptly experienced large, abnormal swings. Economists Justin Wolfers and Eric Zitzewitz have documented this extraordinary convergence in a new paper, titled ...

  In July, Republican James Comey was the toast of the Democratic Party. That was after he announced that “no reasonable prosecutor” would bring criminal charges against Hillary Clinton for allowing e-mails with classified information to be stored on a private server. Party leaders praised the FBI director’s independence. Now, many of Clinton’s supporters argue, as Republicans did over the ...

  One child in seven inhales toxic air which takes toll on brain. About 300 million children live in areas so polluted it can cause serious physical damage to them, warns a new UN study. Children are more vulnerable because their lungs, brains and immune systems are still developing. The pollutants easily find passage through their respiratory tracts. As kids ...