The rising wealth of the top tier of earners seems to be inaugurating a new age of charitable giving. More than 150 billionaires from around the world have now signed Bill and Melinda Gates’ Giving Pledge, promising to donate at least half of their fortunes to charity. Others give money to More

The New York Times: Wealthy people are selfish jerks. So are their children. That is the implication, at least, of a batch of recent psychological studies. In a 2015 study, for example, preschoolers were told that they had earned enough tokens for “a really great prize.” They could keep the More