This project explores light pollution, specifically skyglow, as an eco-marker of humanity's unbridled global population growth and its subsequent effects on the environment. Today, over half the world's population lives in cities. According to research from the UN, by 2050, 2.5 billion more people will be living in cities. Focusing on this exponential anthropogenic growth, Whelan has been documenting urban densification using analogue large format photography. From an array of locations (including Dublin, Vienna and Dubai) and elevations, he focuses on the abstract visual gradient caused by the artificial light refracting in the night sky. The light sources themselves are excluded from the image, focusing only on the effects. Abstraction becomes a tool for accessibility and contemplation.