Air Ink, a brand new concept by India-based Graviky Labs, uses polluted air to create paint and ink.
원문출처 : http://www.cnn.com/2016/07/27/arts/air-ink-painting-with-pollution/index.html
원문출처 : http://www.cnn.com/2016/07/27/arts/air-ink-painting-with-pollution/index.html