Producing a 1.5-liter PET plastic bottle wastes twice as much water as the bottle will hold. That’s the kind of fact you learn through the work of Berlin-based Danish artist Tue Greenfort, who is fascinated by the absurdities of our everyday ways of production and consumption, as well as by the smallest wonders of nature. But “learn” might give the wrong idea; Greenfort’s works aren’t didactic, finger-pointing lessons in ecologically correct behavior. Rather, his art is a smart, at times minimal but always playful and poetic investigation of how cultural and natural behaviors coexist and interact.