Signs of the graphic variety were much in evidence, displaying slogans ranging from Washington Post headlines and quotes from Teddy Roosevelt and the Lorax to puns, pleas, rhymes and artwork. Many referenced the Hudson River, and a few pop culture, such as “Climate change is the new Death Star” and “Every disaster movie starts with an ignored scientist.” Perhaps most poignant of all was a very small girl bearing a sign that simply said, “Earth Inheritor.”