“Nature’s Nation: American Art and Environment,” on view Oct. 13, 2018-Jan. 6, 2019, at the Princeton University Art Museum, explores how American artists of different traditions and backgrounds have reflected and shaped environmental understanding and our changing relationship with the natural world. The exhibition features more than 120 works of art from the colonial period to the present. Pictured: American landscape painter Thomas Cole’s 1839 painting “A View of the Mountain Pass Called the Notch of the White Mountains” (Crawford Notch). Oil on canvas, National Gallery of Art, Washington, D.C.