As another coal-fuelled ‘airpocalypse’ engulfs northern China, Nut Brother hopes his ‘smog bricks’ will raise awarenessHis idol is Subcomandante Marcos, the masked Mexican rebel; his weapon of choice a 1,000-watt vacuum cleaner.Meet Nut Brother, the Chinese activist-artist attempting to vanquish toxic smog by sucking it up through a black plastic nozzle..