The looming end of a federal rental assistance program has New York housing officials scrambling to find alternative aid to prevent thousands from becoming homeless. Meanwhile, the NYPD will launch its “Q-teams” in Queens on Monday, targeting quality-of-life issues like abandoned cars, illegal mopeds, and noise complaints. And a PhD student from New Hampshire completes a full-length paddle down the Hudson River, arriving in the city Sunday after testing water quality along the way.