If tech futurists are to be believed, by the year 2050, robots will do many of our errands and drive our cars. If a new study on religious trends is to be believed, many of those robot-controlled cars will stop and park at mosques and churches. Yes, despite predictions that religion will go the way of dinosaurs, the size of almost every major faith -- sorry, Buddhists -- will increase in the next 40 years, according to a study released Thursday by the Pew Research Center. The biggest winners, Pew predicts, will be Islam and Christianity. Islam, the world's fastest-growing...