America's poor maths skills raise alarms over global competitiveness

Like a lot of high school students, Kevin Tran loves superheroes, though perhaps for different reasons than his classmates. "They're all insanely smart. In their regular jobs they're engineers, they're scientists," said Tran, 17. "And you can't do any of those things without maths." Tran also loves maths. But Tran is not the...