Half of all high school students get news online at least once a week, but teens rate TV the easiest-to-use news source — and the most accurate, says a study out Friday. In the Future of the First Amendment study, which surveyed 14,498 students and 882 teachers at 34 high schools last spring, 45% of teens say TV is the best overall source of news, 44% think it's the most accurate and 43% think it...