Question: The Wall Street Journal recently noted that bachelor's degrees in economics were up 40% between 1999 and 2004 and "There is a clear explosion in economics as a major," and "the number of students majoring in economics has been rising even faster at top colleges." What might be some reasons for this now? (Jessica E. Vascellaro, "The Hot Major for Undergrads is Economics," Wall Street Journal, July 5, 2005, p. A11.)