“BREATHLESS,” an exhibition “that considers the urgencies evoked by today’s air crises,” opens at The Power Plant in Toronto. Featuring Flaka Haliti, Marguerite Humeau, Donna Kukama, and Julius von Bismarck, the show deploys video, sculpture, and sound works that foreground the primacy of air and the fragility of the environment. Of note: Humeau’s polemical biomorphic sculptures, which include Waste I – 1 (a respiratory tract mutating into industrial waste) (image, 2019).