Boys who have unusual first names are more likely to have mental problems than boys with conventional names. Girls, however, don’t seem to have this problem. The murder rate in the United States is about four times greater than in Japan, where no private citizen can legally buy a handgun. Halifax, in Nova Scotia, Canada, has the largest bar per capita than anywhere else in the world. Since 1978, at least 37 people have died as a result of shaking vending machines in attempts to get free merchandise. The three wealthiest families in the world have more assests than the combined wealth of the forty-eight poorest nations.