Trent Reznor has posted a clip of “a minute to breathe,” a song from the score he, longtime collaborator Atticus Ross, composer Gustavo Santaolalla, and Mogwai wrote for Before the Flood, a new climate change documentary directed by Fisher Stevens and starring Leonardo DiCaprio. “THIS IS NOT NEW NINE INCH NAILS!,” Reznor wrote in the caption, preemptively dashing the…