Inspire/Expire brings back to life disused industrial chimneys across Scotland using a smoke generator to create lone clouds. The clouds will constitute a series of poetic moments, a subtle spectacle - ephemeral and momentous in their own right, but also evocative of the industrial communities over which the chimneys once towered. Acting as a nationwide 'clock', Inspire/Expire will countdown to the start of the Olympics in London. The chimneys will emit one cloud of smoke per day, rotating round all 24 sites to act as a chain of silent beacons, a nationwide timekeeper, a call to reflection or communal reminiscence. The sites will be documented with CCTV footage, and a video display installed within the nearby communities, broadcasting each chimney live, round the clock.