Investigative journalism of the old, slow, expensive kind is Eric Schlosser‘s trade. Born in New York in 1959 and educated at Princeton and Oxford, he came up through magazines, writing for The Atlantic, Rolling Stone and The New Yorker, and won a National Magazine Award before his first book ever appeared.
That book was Fast Food Nation, which began as a two-part piece for Rolling Stone and grew into a years-long examination of an industry nobody had yet looked at on that scale. He followed it with Reefer Madness, on the American black market, and Command and Control, a forensic reconstruction of a nuclear weapons accident in Arkansas that was a Pulitzer finalist.
His method never changes: pick a system everyone uses and nobody inspects, spend years inside it, then report it without hectoring. The politics emerge from the evidence rather than being laid over the top, which is why the books have outlasted their news cycles.