After briefly enrolling in the English doctoral program at Rutgers University (where he served as a teaching assistant), he went on to six years as an investigative reporter with the Long Island newspaper "Newsday". One of the articles he wrote was a long series about why a proposed bridge across Long Island Sound from Rye to Oyster Bay, championed by Robert Moses, would have been inadvisable, requiring piers so large it would disrupt tidal flows in the sound, among other problems. Caro believed that his work had influenced even the state's powerful governor Nelson Rockefeller to reconsider the idea, until he saw the state's Assembly vote overwhelmingly to pass a preliminary measure for the bridge.